Goldybear said...
From a hydrodynamic perspective, a square tail (while increasing stability) is going to impart greater vortices and therefore greater drag.
Agreed IF the tail is in the water ! From my limited understanding the tail should not be in the water, rather the water should be releasing just below the tail therefore not increasing the drag! The increased stability from a sq tail comes when you step back on the board or if you sink the rail.
If a square tail increases drag then why are all racing yachts not pin tailed ?
As I say, I am no expert.