I did a homemade version and I have 1 trip on it that way. I think it really helped me and my riding style. Before I could not get far enough forward to keep the back end from washing out on straight across side hills, but now the sled is a lot easier to keep straight. Only issue I have now is getting it to sidehill down hill (not downhill turn, just a slight downhill) as the skis catch and point me straight or back up. Think I need to lock out the T motion next to fix that. I weight 220 without gear.
I think its a great mod for anyone that is a little heavier.