Check out these.....
From Riviera Facebook page:-
As you may have noticed, we have gone Door Crazy. Check out the DOOR Raceboard prototypes. 14' and 12'6".
Yeah...curious. French mob Nah Skwell have something similar - the SCOW
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www.supracer.com/nah-skwell-scow-12-6-stand-up-paddle-race-board/
www.nahskwell-sup.com/en/race/
They look like the old bondwood paddle board my dad made for us kids in the 60's. I think I',m gunna cry. All they need is a pin tail, a big brass drain plug and some garden hose foot straps.
Looks interesting...
I have previously sketched a design for a similar "door" race board.
My concept was influenced from a Catamaran, but as a board, with a moderate single concave up the front, and chine rails, and single concave under the feet, to assist with channeling water under the board. (Catamaran influence on the underside)...
Design intent - reduce the overall width, by adding "stability shoulders" up the front, and added up lift, from the concave...
This just reminds me of George Greenough's thoughts... he hates "pointy nosed surfboards", because those last few pointy inches serve very little purpose... The final inch is like a dagger!
Most of us have seen a grom on a board with a non-critical nose snap... Last few inches of nose snapped off some how, and he's happy to surf it with a bit of grey duct tape stuck over it!
Plus at the other end... the tail/bum... wide square tail twin fins from the very early 70's, before Mark Richards hooked up with Dick Brewer to take the Twin Fin to a new level...
I find these race designs (and potentials) even more invigorating than the surfing design concept... The surf design concept has sort of been done... Simmons, etc.
I agree that the idea of a square nose goes way way back and shapers have said for years that a rounded or square nose is a better design outcome. So the question would be why had it never taken off? Aesthetics perhaps or is there a practical reason for it? To me the surf shapes just look like a scaled up wakeboard. Me ill be sticking with the semi pointed round nose myself but to each their own.
The Doors , my alltime Favourite bandDont think those boards will be breakin on through anytime soon.
We saw and tried them in Cali a few months ago and you would be surprised just how much more stable they are and they appeared to be very fast and incredibly light.
Phill
wide noses help reduce the "front rudder" effect, where a pointed nose would begin to pull you violently on the side.
They are less efficient if you are able to perfectly control your boards, but in real life have some advantages and drawbacks, from what Nah Skwell says after som years producing the "Scow".
This said, I think the Nah Skwell model is a bit weird, as it is patterned along a scow sailboat that is designed to work tilted a lot on the side. I would expect a SUP design to have a rounder / elliptical front "bulge" rather than a flat one. But I am definitely not an expert on this, my longest board is 8'3"...