Drewz said..Someone said there's no right or wrong (it just effects where you set your foil).
That is correct. Some like to feel the foil pushing up on their front foot others do not. I prefer to input using the rear foot like surfing. Not sure anyone has analysed which is faster. Some foils feel better for front foot bias some better for rear foot bias. Demo as many foils as you can before you move onto your next foil.