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that means they sometimes kinda half let go when accelerating under pressure) for the first few runs! I wonder if that was linked to the info in the above statement?
and those funny little brief 'squirrels' would disappear.
I remember a couple of coats of mr sheen worked wonders on the bottom of
our body boards bak in the day, was easier catching waves & had so much more
speed on the wave, mayb time for mr sheen on the bottom, if u can still buy it.
velocity*length/kinematic viscocity.
Sure I have made some assumptions but it does give you an idea.
I used values of ocean water at 1 atm and 20C...
Unless you are going directly behind someone or in the surf i doubt there will be enough sand/air in the water to have much of an effect.
HI Blazing 928 ,
Mines a 88 S4 in Diamond Schwartz Black . I looked at the Tiga when it was on Ebay but realised my collection is enough and I have a Mistral Equipe of the same era which does me . We have same sort of taste by the look of it . Not sure of your take on Saab 900 Turbos and International Scout 800's ( my other cars ) .
Cheers and hope to catch you round in the 928's
Oh by the way I use Motul 6100 in my 928
sharks have a sandpaper skin and dolphins have a rubber like smooth skin.
nature hasnt even decided which is faster.
why doesnt someone drag a smooth board and a sanded board behind a boat at the same time and measure the pull. or drag a smooth piece of plastic and a sanded piece of plastic under water and measure the pull.
my hypothesis is rough has less resistance for lower speeds and smooth is better for faster speeds, but where the threshold is I dont know, for example is that fast threshold at 60 knots or 200 knots?
. The hail drop's the water temp at the surface and provides a ball bearing like surface to reduce friction, did it make a difference one time? maybe but so did timing the start of the run in a squall. have Fin Coolers, made from gel/ice packs that keep their fin's cool whilst waiting on the beach for a run. Other teams say it's a conspiracy against them for the Pit Crew to have an unfair advantage over them just like the Pit being on their doorstep which is nonsense., technique and good design probably have more of an effect than gloss or sanded finish when your going flat out
I'm pretty sure the top speeds at Luderitz have been done with both. Most have more chance of going faster than before by spending more time on the water trying to be the fastest at their local spot honing their skills. 
I imagine you'd want more resistance on the bottom of your board down at Sandy Point so you can maximise the advantage of the outgoing tide..
If you had a slippery board you wouldn't be able to catch that current, what is it on a good day, +4 knots?
. Don't forget you get eddy current's close to the bank going in the opposite direction where the water is smoother/faster, so slippery better on outgoing tide. Of course if you have an Eddy Current Suppression Ring fitted to your board Barn and left turned on it does not matter. 
Stepped hulls, so obvious! This way you can gain maximum push from the downwind current..
Yes, same tastes DB. Great Mate of mine has two Saabs, I've spent many miles in early EMS & ex Rainsford rally car - massive respect, but I was an Alfa boy - now I have two Alfasuds awaiting restoration.... Also Haflinger & Ducati 907 & Lambretta ...I looked for Mistral for years, always for sale interstate, I recently missed a local one, so bought the Tiga. Will still hunt for the elusive Mistral panam .....the 928 is slowly finishing a 4+ year restoration, some mechanical fixes & completely new leather interior. Ciao Nigel
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Alfa Boy Hey , Say hello to Mum for me , I have had 13, yep one three, 105 coupes in various engine sizes in the last 20 years . Probably wouldnt have much to talk about if we catch up some time , bet your not 120Kgs though
Nope DB, only 85! Gee, I'm only up to 6 Alfas - Sud, Alfetta 2.0, guila sprint GT, Autodelta Alfetta Gtam, 2 x Suds - yep not much in common...
so, I'm going to leave the finish matt for awhile with the intention of another coat of 2 pack urethane on the bottom, but sprayed this time and then finish to a gloss - for ease of maintenance and then work out a refinish of the top. I'd like to keep the graphics, so a mat clear with some more anti slip.
