Dagger boards with curves would be so rad IMhO hydrofoils like on a trifoiler or curved aft like a sword would be more phyc than hype. I've seen a photo of something like that I believe it was posted on the usaca.info site showing just a short section of hull with one in it. Nice and wing like not a gang plank! Could be used to slice thru kelp instead of growing it even self cleaning. I dont see a down side there.