An image that seems to help everyone i have shared it with is "TUG 'O' WAR"
pretend like you are playing tug of war with the boat. heelside cuts are the "traditional tug of war possition--> pulling backwards, using body weight over the heels but applying pressure toward the opponents to push yourself backward. NOW pretend you are going to instead put weight over your toes, applying pressure toward the opponent = the boat (the boat is really not you opponent though, its just for image sake) as if you wanted to point your chest away from the boat.
All and all, toeside or heelside, it is not so much as putting weight over the toes or heels, but it is also the direction that the pressure is applied. in both cases, the pressure is always toward the boat, especially the back foot.
maintain your edge all the way up the wake, this will help to continue to maintain it through the air and back on the water on landing.
Handle placement is key too. keep the handle close to your lead hip. if the handle drifts toward your back hip (or even between your hips, in front of the naval) then this will pull you into a 180 or a partial 180