I'm not sure exactly what your doing but I built a type of smitty sled that has adjustable poles for either raising or lowering the load from the skis. I used an aluminum walker that I got for a dollar or two at a yard sale. They have 4 legs that are adjustable for height and will adjust up or down several inches. I had a friend who was a welder and he rigged up a plate to screw to the skis.
I don't remember but it's possible I used 2 walkers to get all the aluminum I needed.