I put 4 fans on the underside of a wing and was able to fly it for over 10 minutes!
When my battery was depleted and I was gliding to recharge the normal wing timer started but when the fans were powered again the timer stopped and I could fly indefinitely!
At that point, couldn’t you just use a wooden board as the base of the vehicle? Some of the sky islands have vehicles made from fans positioned like you’re saying plus a metal grate, and the handle pretty well. It seems the game realizes this and treats the wing the same.
I suppose you could, but the board wouldn’t let you glide a few times to recharge your battery like the wing.