Just wanted to put an update up of the finished setup. I put vertical 2X6 supports running from the lower cord to the upper cord of the rafters. Then I added straps, which should help distribute the weight over 5 points and not just everything on the winch. I then raise the ski enough to get the straps under it, then I lower 50% of its weight on the straps. Now I just need to copy this setup for the other ski and hang it right next to this one, park the boat underneath it and I am ready for winter..