Steve,

Do a search on the F16 forum on the keyboards : Brobu, I-17 and read through the long thread where several of use dialed in his I-17.

In theory higher aspect (=long boards) boards have a more efficient lift to drag coefficient ratio but in real life there are a few extra considerations that limit effective application of these long boards. And all have to do with speed and not with depth of you local lake.

In some way long boards are like a more efficient driving system between the motor and wheels of a drag racer. Sounds pretty attractive but when realizing that drag racers need accelleration in stead of efficiency and that their accelleation is all but limited by the tracking of their slipping wheels it will be apparent that a more efficient drive system is all but USELESS in dragracers.

Something analogue is happening with boards and cats.

Wouter