PPC Link boards already doing this !

ppcfoiling.com/product/link-board/

Maybe the skinny DW'er boards can be looked at as being the bustle without having the upper flair?

^^ Agreed

Neither the PPC nor Omen are anything like the massive rib under a America's Cup yacht. Further, they do it in AC so as to counter some of the hull design rules they are constrained by - not because it is 'best'. Can't see any way it is applicable to foil boards unless you're racing with continual touchdowns in turns

Sunova Carver has an aggressive chin. The width of the board is only 20"www.totalwing.com/wp-content/uploads/2023/11/sunova-carver-tom-poseidon-sports-12.png' />

Still nothing like the AC boats, nor the reasoning for it

Fair bit of 'coolest kid down the beach' stuff happening in winging unfortunately

Just look at a foiling International moth Hull and how it's developed over last 10 or so years. Getting foiling early is paramount to them winning.

Mike

I did this a couple of years ago with my 5'8" wing board, a narrow centre section flaring out to a greater beam at the rail. Worked really well, certainly better than any equivalent flat bottomed board I tried of similar dimensions. Amazing the number of people who told me at the time that complex bottom shapes were a waste of time and flat was best.

And yes Mark, it was inspired by the concepts from the most recent America's Cup, whose centre hull sections evolved specifically to minimise drag on takeoff and touchdowns.

No, all that is required is that when the board starts lifting a bit the side sections clear the water and reduce the wetted surface rapidly. Conceivably for a longer, narrower hull the centre portion could be rounder and deeper, so you get some beam and stability at rest but the hull shape rapidly sheds wetted surface area as it starts moving and the foil starts lifting.