I`m with Farlo on this !
I stick my mast track at front in every boarrd I`ve got .Have done so for past 10 years.
Occasionaly experiment moving it back but never found any benefits only drawbacks. (later planing; bouncy nose)
Thought I was the only heathen !!!
(I justify it saying at 100k (+) all my board needs best early planing .
Listened to some fool in Feurte telling me to move track back for speed. I went back out and found I was 3 to 5 knots down; pushed it back to front and sailed past the "fool".
Even leave it at front with quite small sails !!!
Its one less thing to worry about adjusting ; for me anyway.
Seems a different issue for mates though; they all move it back with smaller sails !!! Which makes sense but doesn`t work fore me !!!