Agree with everyone here.
On my 107 I use the track in the middle most of the time (a bit forward if its nuclear) and all my straps are in the back holes.
I use 42cm SL2 on 8.6m, 40cm Birdi with 7.8m, 38cm Birdi or 36 SL2 with 7.2m if it's super, super windy. Great board; so versatile. I found I kept the boom at the same height as last year even with the lowered section in the board. A good fin makes a world of difference...
GetWindsurfFit.com // The Ultimate Windsurfing Fitness Program.