A tramp shaped like a wing would add lift too, right?
Do you want lift from the tramp? Won't that force additional weight to counterbalance it (hiking)?
Yeah, that's another issue, and that's why I've been wondering if we want vents or no vents, ie. lift or no lift.
And at first sight I thought the 'wings' on Hydroptere were wing shaped, but on closer examination, I guess they are not, and it flys anyway, on just the blades. Imagine if they built the aka's with a naca wing profile and could keep the top clean enough to generate even more lift!
http://www.youtube.com/watch?v=2boayPZ3GbE&feature=player 
