Boomless is incredibly simple, I don't have any good pictures right now but if you can setup your solcat you should be able to figure this out.

Nacra went boomless on a lot of their boats in the past and still do with at least the 570 and 500. I don't know what your sail looks like but it will be fairly similar to a normal sail except that the mainsheet has a hook that attaches to one of several holes or a track on the clew of the main.