Update. The BOM have downgraded Mondays forecast to 10-15 NE. Damn. The doldrums continue.
You blokes need to invest in a paddle!
I'm Knackered 4 days straight, I'm aiming for 7, will see how I go, am having an affair with an 'ol woman' only just got my board back from doctors after the damage has been fixed and rash cleared, she is a mean mistress when your on the 'rock's with her!
yep, supping is the answer.
what has become of me, I'm actually thinking about not getting a slalom board and getting another sup. I'd like something a bit more stable for my massive bulk. 
and one that will pick up the fatter waves.
i've been toying with a new sup design for a while. started off as a second board so the wife and I can do it together. 
it's morphed into a longboard....... I'm really liking the feel of the shape with this one.
Man you've got too much spare time designing from scratch! Wow! My only thoughts...too wide, long and volume.
I'm currently riding a Naish Nalu 9Ft5 (80-85kg) and If I went again I'd go a tad smaller, have ridden a few brands and sizes, most recently Fanatic Allwave 9f 1" . My Board specification is 'need to be able to paddle flat water, open ocean and small to medium waves' pretty much most designs 30-32Inch wide 9ft-10ft will do that for an 80-90kg person. And kids can paddle it.
The SUPS designs out now have really improved in their stability and versatility, you can go a lot smaller on size and they still will paddle ok in flat water and handle small to med waves, before you need to get a dedicated wave SUP.
When you have 'too much' volume they become a bit unstable ..sounds like an oxymoron but its true, the board sits too high on the water and is more prone to small chop, waves etc, they kinda get rocky, if it sit's 'in' the water a bit they are more stable in less than perfect conditions and will surf a bit better. And at the low 9ft size you can fit them in a Van/Station wagon!
FWIW the Naish has quite a lot of nose and tail rocker, wide nose than you can nose ride a bit, I'm a crap surfer but can get waves on this...change the centre fin down from the big one to a small one so its 3 thrusters and its a completely different board, really loose and in the right hands probably can surf really well.
The Fanatic AW is really stable, easy to paddle but flatter and bit more 'skatey' , both boards are easy to paddle for my kids , they can turn and control smaller boards much easier, I like both boards a lot.
If I was 'designing' from scratch I'd make a combination of both boards, dropping the volume a bit, the fanatic has a Sail Plug, Naish does not (dumb!) and IMO you don't need a centreboard, Iv'e sailed other Naish Sups(longer) as a Sup sail, lots of fun, just use the rail to get up wind.
The one thing I have learnt is that when you get into the SUPs that have a bit more performance in them, there is actually a LOT of difference in 'feel' with the designs, like windsurfing SUPS have their 'dedicated' designs, but around that 9-10ft 30-32inch wide range its pretty cool what you can do with just one board. If you go too 'wide' they will be crap to paddle also as you will leaning over 'reaching' rather having a nice vertical blade and pull/pushing the paddle.
As soon as you have it nailed and built let us all know,,,cause it's shore to blow hard the day its built!
fortunately, it doesn't take me to long to design something. a 1-2 hours once I get the idea going. then I just tweak it.
it's interesting reading your view. you know I think you're on the money and it's the direction I wanted to head towards initially but I've found it not working for me as much as I'd hoped. my current board is 9'10x32" fish. it's a good board. I use it to sup sail and sup but I'm a hack at supping in the surf so prefer it with a 5.8m sail when there are waves around. my wife finds it too unstable in anything but small clean point breaks. on flat water she's more than fine with it.
plus I'm over 100kg and if I was to be brutally honest, it needs more volume for me. I'm keen to try more volume and less rocker for better glide onto longboard style waves. I agree with you that for an 80-90kg person with intermediate skills my current board would be a good allround size.
so, I'm chasing a board that suits a complete beginner (my wife) and gets me onto fuller waves or even just swell more efficiently. 35" is pretty wide so that should have bucket loads of stability for the missus. centreboard is a maybe. I agree the length in the sups let you get upwind fairly easily. still for the kids, and for touring a centreboard can be worth it. besides, I don't have a board with a centreboard at the moment.
I'm not convinced with the rocker yet. I think it needs more tail and nose rocker.
there's on other thing I forgot to mention. the 9'10" is almost to small to get all of the kids on the board with us. well for me it is for sure. the wife can just do it.
Nice! That's user friendly! Its been amazing up here lately, water is so clear and warm. Supped 5/6 days so far!
Try and have a look at the Fanatic AW 9ft 6, to pinch some measurements etc...it's kinda what you have described you need, but bit shorter, Naish have a new BIG board out too, think its the Odyssey? Also the Starboard Whopper has always had good reviews for a 'bigger' allround board also, might as well leverage ideas where you can, no pint reinventing the wheel!
the fanatic AW is pretty much what I already have. the shape is very similar. looking at the AW it seems to have less rocker than mine and the rails on my board seem more refined. I guess those 2 things will make a big difference to stability for the AW but without comparing them side by side it's impossible for me to tell.
when first i tried my board model I asked for my version to have an extra inch width because I was already a little undercooked. I don't struggle so much with balance but I do notice the waterline length when paddling.
I had a look around at other sups. the whooper and the naish nalu were the main ones while i was designing this board. i pretty much looked at everything out there including fanatic and rrd. it seems what I've come up with is a cross between the starboard Avanti and the naish nalu. the Avanti outlines are almost the same it appears, and the nose i choose is a naish like reference so it cuts through waves. i also borrowed the concaved deck idea from naish to improve stability.
the rail profile and concaves are a take on what i use on all of my boards. single concave entry in double concave into v with tucked rails flowing into hard tail. this time though i wanted to try some chines to help me thin out the rail.
so after your previous post i did some digging. you made me question my approach whish is always a good thing. i unearthed some good info that will help in the end regards rocker and rails.
When you get finished, send the recipe to China, get 10,000 made for a few cups of rice, do some fancy marketing that involves lots of girls in Bikini's and Shazam..you have a new brand for the mass's,, cha ching cha ching!
Make sure you add a 'special' secret thingabig dooza wacky to the design so we can charge way more for them also.!
Can't wait, sign me up for No1 team rider marketing AKA bum around the world for lots of money!
But make sure not too build them too well, they have to break, implode, delaminate etc after not too long.. we need a replacement market, to sustain our lifestyle!
when I get finished i'll probably go for a sail and a sup on it and then start thinking about the next one. 
