????
Maybe I'm wrong, but you should have some sort of slug or slider, to attach the main to the mast. If not, I can tell you about a friend of mine who has broken thier mast because they didn't rig it with the sail slugs. (Apperently he was extremly hung over, and he had Hobie 14', and just forgot to put the slugs in the track.) I would believe that it would be extremly hard to trim your main, and you would end up with a mid-ship spinnaker. Like I said I may be wrong and you have some other kind of rig.Cheers TJ