well the bitter ends haved a sweet ending because they go through a sleeve that is the trampoline around the mainbeam and are attached to each other by a bungee cord!
This has the added advantage that it really tidies up the trampoline and, for that, the Pro-Sail boats are a bit ahead i.e. no real strings across the deck..
If you want a better look, have a look at this,
www.prosail-asia.com/Boats/F16%20page.htmlcheers