When you are doing any of the tricks, you want to plant your feet and not move them until you have completed the maneuver and are doing the exit to level flight. It's important as a reference to the centerline or intersection. Ideally, I'd want to have my body square to the loops & H8's, but if you're flying a big/heavy plane, you might need to put one foot forward or risk being pulled over onto your beak. Depends also on your height/weight, but at least, keep your feet planted for reference. I will add that for takeoff, I plant my feet so that I'm looking at the plane off my right shoulder, so don't need to move either foot until the plane has made 1/2 lap. I had been ragging on Howard about his takeoffs and suggested trying that, and he claims it's improved his takeoffs. What you do with the feet really matters...also the neutral setting on the handle is critical!
To do the wingover, you would get ahead of the plane in level laps enough so that you can plant those feet so a line through your ankles would point at the judges or upwind (hopefully both). Spread your feet to a comfortable amount. When the plane almost catches up to that line, you'd start the wingover, hopefully exactly following that line. For a Beginners WO, you'd keep feet planted until you pullout into level upright flight, then move your right foot. For the higher skill classes, you'd pullout inverted, do a half lap inverted, climb into another WO, and then pullout upright, keeping your feet planted until after the upright pullout. At least you won't have to retrain your feet when you move up, and it's not that hard, because there are only two basic dance steps.
Dry flying would be the safe way to get the feet/hand synchronization figured out. If you fly either lefty or CW, you're going to have to figure out how to adapt for yourself, and that's the way to do it.

Steve