I have been thinking about installing a Harken 2135 ratchet block on my recently purchased 1975 sunfish. Not having any experience with a ratchet block, other than reducing the effort required to pull the mainsail in will it hold the line to allow you to free your hands up? If not, has anyone installed a clam cleat in place of the old hook to hold the line? (Harken 365 Carbo Clam cleat). This forum has been a great learning tool for someone new to sailing.