Does anybody know what specific exercises and equipment and weight-training work best to develop the muscles most used in catamaran sailing? And which muscles are they? Forearms? Upper arms? Legs?

For instance, I know serious Laser sailors who live in snow country have their "hiking benches" that they use in the winter while they are watching TV so they can keep their stomach muscles strong.

And I think there also is a sheeting thing that some use in conjunction with the hiking bench to develop strength for the specific type of sheeting they do.