1. Grommets placed at the sew points on the vinyl tramp work fine. I did a vinyl tramp with my H16. Did not reinforce and have had no problems.
2. Under the tramp, thread the line through a stainless, aluminum or brass washer and then back through the grommet again. Make sure the washer is larger than the grommet.
3. You can easily kick under the tubes while under way. Cushiony and soft to lay on and they help keep the main and jib sheets collected into the middle of the tramp.
Sail fast, Tom G