Well, I have a Laser and Sunfish, actually 2 of each. My son is getting into racing it which means we will be traveling with it over distances. Since we have dollies for each, I was looking at the Right On trailer but those are not in stock for a while. So I went to the drawing board with my friend who is very handy and he helped me fabricate these changes on my existing trailer that is really made for a Jon boat. We fabricated steel channel pieces that lock into the dolly frame material. This design really locks the dolly in place. Thoughts?