My Wavescoot is a single fin on one end with 6 inches of pintail behind it ,
after making a couple of these I started cutting off the pintail when it got to an inch behind the fin it started to washout and not hold ,,.
The shorter the pintail the easier to turn and had less upwind ablity ,with the longer pintail it was hard to turn quickly but was super fast and lots of traction for light wind and upwind .
My current project is using the pintail(single)4.5" for going to windward and 4 fins(quad) for down the line
