I have an interesting case of foot positioning, when I get going from a standing start it's just about always the right foot that goes first but if I'm riding off the saddle and not pedalling I always have the left foot in the front, the right in the rear. No way I could do it the other way round, probably a good way to guarantee a crash on a technical section. Also if I have to ride with only one hand on the bar it absolutely has to be the left one, trying to manage with the right hand is likely to end up in a ditch even on a straight road.