I think that looking at snow skiing has a lot of benefits, as a snow skier turns either the left ski or the right ski leads depending on which way they are turning. As a skier turns left their left ski leads and carries most of the weight and determines the apex of their turn while the right ski really generally just helps balance and support, the left ski then carries most of the weight all the way through the turn until the edge change where the exact opposite happens. The difference in waterskiing happens when we get to our offside turn and the foot that would naturally balance us through the turn, and determine the apex of the turn is instead behind our support foot, the only reason our bodies can be in this position is because of the rope, in our offside turn we lean on the rope to much through the turn and across the wakes, the less we lean on the rope and the more balanced we can become on the front foot the more efficiently we can ski the offside turn. I think that in general you will always have more line load on the offside turn because you really are trying to turn and stay balance on the ski a way that is completely opposite to what your body would normally. I don't know maybe this is all completely obvious to you guys but I just started thinking about it as i was reading this thread and thought I would comment.