I started strapless but board was too narrow so got distracted for a good while.
now I've set my wife's board up with two sets of tracks and have gone to the Spitfire XXLW. The straps are becoming a nuisance as I started migrating them inward.
I was really only using them as a positioning aid .
One session without them but very orrible conditions so only two runs on foil
afterwards it was more a case of not noticing they weren't there, rather than noticing any great difference.
ps: yes I did notice that my nose in over the front crash trick. Was way less painful on the foot that would get jammed in as the rail bit.
pps: next time I'm moving foil to Sup position.