From Kato's recent world record distance effort there was some discussion about how many gybes he did.somewhere in the order of 400 apparently. Its a bit meaningless in the context of a distance attempt as he was trying to maximise run length and minimise number of gybes.
It brings up some interesting questions (at least for me):-
1. Is there software that can calculate total number of gybes from a session?
2. What is the highest number of gybes in one session someone has achieved?
3. What is the highest number of undropped gybes in one continuous session? (can software automatically determine the difference between 2 and 3)
4. Should it be a thing? The Alpha is a good way of seeing how fast/efficient you are at turning but being able to turn consistently without crashing when you are tired seems a different but also challenging objective. Total number of gybes seems a good way to measure that??
5. What is the minimum run length someone has done to consistently gybe and not loose downwind distance..assuming planning at speed and thus try for highest # gybes
As a newbie, my best session about a year ago I did 260 gybes in one session (3 dropped). (calculated from distance and approx run length..for sure I did not count them) Surely If I can do this many as rookie and Kato can do 400 over 24hrs there is someone who has done way way more?
This my track www.ka72.com/Track/t/462874
Winsport Tracker shows number and percent jibes - planing, non-planing and missed.
Select to expand quoteremery said..
Winsport Tracker shows number and percent jibes - planing, non-planing and missed.
Unless you are foiling - that feeling after foiling through one and hearing the "Last run..."*
And, I'm thinking, "B*tch, I made that one." 
But, agree, Windsport Tracker has a bunch of useful info like jibe completions and I enjoy using it.
*Indicates Windtracker thinks you dropped below foiling/planing threshold. It has audible info including speed and last run max.
I haven't tried it on the water, could be a plan when I replace the current Android phone.
thanks Remery and Te Hau,
I hadn't come across either of those software.
I don't have Android so can't check Winsport tracker but GPS Action replay looks pretty good and in depth and worked fine on Mac.....even gives gforce through the turns
This is the number and results I get for your session from GPSAR-Pro. :-)
But I have not found a way to tell if they are 'Planing' or not.
34 here at sandy Point in a 1 hr session. Planed out of all but the 30th and the last one's. So I guess that 29 Planing Gybes in a row. 
Nice one Sailquik, not sure how much I trust the results from Gpsar though. Shows me (rookie) pulling 8+G in turn 227...I'm sure you realise my body is not capable of 1/2 that. Planning versus not planning is interesting for sure but off the point of the original post being how many gybes can one do in an hour or one session. If some gybes aren't planning or you drop some, that just goes against your count. i.e. Highest # of gybes wins.
So to start, your post above is 34 gybes in 1 hr and my lowly effort is 231 in one session (total 6.65hrs including rig changes and rest stops which equals average 34.7 gybes per hr) and Kato did around 400 in his crazy distance 24hr (not official). Suggest that anyone that can beat that (seems easy), post their log and gybe counts here. Seems to me a really good way for a solid workout and a good KPI that is opposite a good hr/distance etc. Not all of us have long runs, steady winds and time to compete on the big numbers but many have an hr to spare to go on a crazy gybe fest.
That's a mighty nice sailing and gybing spot you have there Andrew, not envious at all!
A few years ago there was interest in a gybes number competition as you propose and so GPSAR incorporated it in their 'Jibes Analysis' section (I have Version 5.31).
At the bottom of the jibes list is the 30 minute and 1 hour number of gybes and the average speed.
If I could figure out how to copy and paste to SB I'd send my sample.
30 minutes, 27 gybes, average 22,2kts
Select to expand quoteremery said..
This winsport app looks good, did you pay a subscription to access it ?
Select to expand quoteFlex2 said..
Nice one Sailquik, not sure how much I trust the results from Gpsar though. Shows me (rookie) pulling 8+G in turn 227...I'm sure you realise my body is not capable of 1/2 that. Planning versus not planning is interesting for sure but off the point of the original post being how many gybes can one do in an hour or one session. If some gybes aren't planning or you drop some, that just goes against your count. i.e. Highest # of gybes wins.
So to start, your post above is 34 gybes in 1 hr and my lowly effort is 231 in one session (total 6.65hrs including rig changes and rest stops which equals average 34.7 gybes per hr) and Kato did around 400 in his crazy distance 24hr (not official). Suggest that anyone that can beat that (seems easy), post their log and gybe counts here. Seems to me a really good way for a solid workout and a good KPI that is opposite a good hr/distance etc. Not all of us have long runs, steady winds and time to compete on the big numbers but many have an hr to spare to go on a crazy gybe fest.
Here you go Flex, this was from Albany session 325k total 237 jibes stops/starts etc no idea of total time of session but no where near young Kato's numbers, average runs 1.3k long, 1 hour numbers for your interest below with the average jibe speeds not sure how accurate the software is though.
Select to expand quoteTe Hau said..
A few years ago there was interest in a gybes number competition as you propose and so GPSAR incorporated it in their 'Jibes Analysis' section (I have Version 5.31).
At the bottom of the jibes list is the 30 minute and 1 hour number of gybes and the average speed.
If I could figure out how to copy and paste to SB I'd send my sample.
30 minutes, 27 gybes, average 22,2kts
If that's the one Macroscience did I believe a pack of beet came my way . Sorry can't remember the numbers but it was fastest 1 hr with most jibe's
Flex it got me thinking (scary) to achieve an average of 25 knot 1 hour and you jibed every 500 metres you could achieve 96 jibes More than a workout so who's the first to 100 jibes in an hour
How about the opposite, a 24.5kt hr with only 6 gybes? A while ago now, 21/1/2010, when I was still fit enough to sail all over the estuary.
Select to expand quoteFreeflight said..remery said..
This winsport app looks good, did you pay a subscription to access it ?
It was a free download when I got it a couple of years ago. Initially there were tiny differences to GPS Results but that's all sorted.
Select to expand quoteAus501 Boz said..
Flex it got me thinking (scary) to achieve an average of 25 knot 1 hour and you jibed every 500 metres you could achieve 96 jibes More than a workout so who's the first to 100 jibes in an hour
I think I did 56 in an hour an missed one. Pretty sure my average was only around 17. I'll see if I can find it and put into Windsport Tracker to see how many were planing.
Select to expand quotedecrepit said..
How about the opposite, a 24.5kt hr with only 6 gybes? A while ago now, 21/1/2010, when I was still fit enough to sail all over the estuary.
Too true mike, but I'm still a spring chicken at 60 so will give it a go at Albany to see if it's possible, plus until I find a way to light my darts up on water 1 hours enough continuous sailing for me??
I stopped counting at 120 for a Glory holes sesh a while ago. No idea about percentages or dropped or not. Last hour attempt I went 50min before I got wet. Spewin!!
Select to expand quoteremery said..Aus501 Boz said..
Flex it got me thinking (scary) to achieve an average of 25 knot 1 hour and you jibed every 500 metres you could achieve 96 jibes More than a workout so who's the first to 100 jibes in an hour
I think I did 56 in an hour an missed one. Pretty sure my average was only around 17. I'll see if I can find it and put into Windsport Tracker to see how many were planing.
Rob interesting did you do it at lucky bay, it's about right for the end of the sand bank, turn approx every 571m, so it's possible given enough wind and stamina to hit 100 jibes
Select to expand quoteremery said..Freeflight said..remery said..
This winsport app looks good, did you pay a subscription to access it ?
It was a free download when I got it a couple of years ago. Initially there were tiny differences to GPS Results but that's all sorted.
Thanks Remery, have loaded app, works great
Non planing gybes don't count in my book.
At the ridiculous end of the spectrum, someone on a Windsurfer One Design could attempt to do continuous flare gybes with almost no sailing in between for as long as they could physically last - or die of boredom, whichever came first. 
There is not much motivation to do as 'many as possible' gybes on a one hr attempt, because the less you do (longer the legs), the faster you Hr will be.
It was in Liptons Corner, quite a while ago and I can't find the track, the hr average must have been even slower than I thought.
Not a great example but I tried today to have a crack at maximising gybes but wind was marginal and deteriorating and difficult to get going so certainly very few planing gybes (maybe 4 out of 34). There was a flag in the water so I made it a self induced rule to pass upwind of the flag at least once on a lap, plus be planing on entry to gybe and passing flag. I counted 34 gybes in 28 min with 13km travelled on GPSSpeedreader before I dropped a gybe and gave up as wind/gear setup was no where near optimal for this...In theory that's a run rate of 68 per hr but easy to beat that with some more wind or bigger board/fin setup. According to GPSAR was 50 gybes per hr (but that is averaging the whole session). Couldn't see a time stamp in GPSAR for each gybe to make it easy to count. www.ka72.com/Track/t/489667 You could have a metric like (#gybes in 1 hr) x (distance in same hr)...that way full planning gybes, high speed and # of gybes are rewarded more and eliminates continuous flare gybe tricks (although that would be an impressive feat). Anyway, it was fun gybe practice and will try again in better conditions.
Select to expand quoteremery said..
Winsport Tracker shows number and percent jibes - planing, non-planing and missed.
I thought I would give that app a try. I am using a GT-31 that I only use rarely to record speed runs, I want to use it more to encourage myself to improve my gybing etc, when sailing alone.
Anyway in a 4 hour session I did 100 gybes. 99 were non-planning and I only fell off once? I sure I planned through at least once 
Is that because how it works with GT-31, I have it set per the recommendations that are on www.gps-speedsurfing.com/default.aspx?mnu=item&item=GTx
Maybe something to do with minimum speed set on gt-31? Anyway anyone using that app with GT-31 and know how to adjust it so gybes section makes sense?
I had a look in the Windsport Tracker manual to see how it defines a planing gybe, but couldn't find anything. I reckon it must be something like 12 knots and over.
Select to expand quoteremery said..
I had a look in the Windsport Tracker manual to see how it defines a planing gybe, but couldn't find anything. I reckon it must be something like 12 knots and over.
The developer of Windsport Tracker tells me that, "Yes in simple words it is a jibe where your speed doesn't get below 10kn. Technically, it is a bit more, as my algorithm allows a short drop (1s) to be little below 10kn. The reason for this is for motivation. If you can make a jibe and just 1s is a little below planing speed, it is counted as a planing jibe. This should motivate you to continue. Once you become better, you will look at your planing jibe ratio and also at your alpha speeds. Also from outside this 1s is hard to see. The 10kn is for windsurfing, if you are foiling, with wing or sail there is a different threshold. Does this make sense?"
