vertical fin or horizontal hydrofoil ?

i’m seriously wondering why nobody here ever posted anything built off the idea below :

He won’t be patenting the Lunocet’s design. “If you’re taking ideas from nature,” he says, “how can you then go to the patent office and say these are mine?”

Dolphin-Inspired Man-Made Fin Works Swimmingly | Scientific American

how would this work best on a board, as a vertical fin system or more like a horizontal hydrofoil?

Guess one problem would be that we surf on the surface and the fins come out of the water in turns.  WIth a big horizontal fin like that it would be hard to put your board on a rail I’d say.

howdy parick,

seen the tow-in footage of the hydrofoiled boards in ‘surfing giants’? the attachments underneath were triangular, jetplane-like forms which didn’t necessitate going on rail for them to turn. closest i’ve seen to the low-rake adaptation above is this one > http://wavegrinder.com/ – which took its ‘inspiration’ elsewhere.

if you could take the above tail shape and cut them in half, how would you set them up as a twin-fin cluster to make 'em work ? hmm !

 

Surfiber, I remember the system you described…looked like a quad with a jet plane wing stuck to the tips of the fins and connected them all right? I can’t find a picture of it. Was wondering where that idea went. I think they even advertised them for small watercraft for stability.

heya woody, you mean this toy built by laird & his buddies?

not my idea of fun but hey, the thing works ! hehe

cheers,

Here it is…can’t clip any of their pics:

www.shredda.com