I've seen cam cleats also used to hold the halyard up. A clutch is too big and too much work to open. On a 30 footer, a mast man would be a good idea if you have extra crew. On my 25' a mast man would just get in the way.
Make the spin exit on the starboard side if you normally do port roundings. Keeps the 'jumper' on the high side.
Merit 25 # 764 "Audrey"