I like my Prindle-18.2 trampoline... once it's on. It's a bit of a pain in the butt and truly requires two people. It's a 2-piece with lacing down the port and aft sides. The tramp has a bolt rope which feeds through a track in the front crossbar. Then you feed the sides through tracks on the starboard and port hulls. The aft piece, like the bow has a bolt rope and feeds through a track on the rear crossbar. It can be tight and hard to get it on. But once it is, the lacing on the sides can be tightened really tight. There are no gaps between the hulls and crossbars and after the first sail, you tighten it up again. I keep mine almost board-tight.
Nice - if you have the patience to get it on properly. <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />