Slalom session today with the boys... tried unsuccesfully to out slalom Remi, Tim and Baz, three of the fastest boyz on Botany Bay! I could easily outpace them in the lull's, but 23 knot max was no match for their top speeds even across the wind... 

F4 on 115 fueslage needs the mast much further back, maybe 132 or so... I started at 136 then tried 134.5 and later about 133 but the ride was very back foot heavy and when I tried to push the nose went down too easily. 1mm shim and small tail.

Fun times!