I haven't done my job yet. I rode Tom21 ski.
He had his front toe hold and rear foot holds. I felt okay riding surf stance with my front foot under the toe hold and my back foot in the foot hold, but I would prefer a rear strap because I like to ride wakeboard stance. I came from wake boarding. The foot hold is too far to the side and I like my rear foot in the center of the ski on the kicker.
I'm going to go with rear foot holds, tom21 front toe hold and one rear strap for surf stance. I know after riding toms ski that this will work well for me. Rear strap will be sligly turned (so my foot is only about 30* turned compared to the back of the hull.
I was thinking about doing hull inserts so I could have an adjustable strap (think about how you can turn a wakeboard boot angle) but I haven't figured it out yet.