Tornado cat

I have just purchased 1986 tornado cat and it has a big hook at the head of the sail. It is supposed to hook at the top of the mast. I have spent way to much time trying to hook this thing at the top of the mast. Is there a special secret way to do this. Help!!!!!!!!!!
Buy the Aussie ring (07-3064) from Murrays Sports. Also use a windsurfer Easy Rig to put on the Halyard for the final pull. If you put a single Harken Big Bullet on the mast about head high when you're standing in front of the mast, your halyard pull will be 2:1. Pete