There would not be a tackle at the head of the sail between it and the halyard.. even if you wanted some power how are you going to adjust it? - and there's no room there in any event.
Is the mast down? Could it be the halyard is connected to the cunningham tackle for storage?
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"