how I did mine
Hi TerryI attached a stainless strap about two inches long (made from a Home depot hinge) with two 3/8" holes to my mast base with a 4" bolt. Round the corners so it can rotate. I then attached a block with a shackle to it. next an identical block to the starboard stanchion base. Finally, a good rope clutch just ahead of the starboard winch. My halyard runs straight down thru the mast-step block, then across to the stanchion (a deck organizer would be a better choice eventually), through the rope clutch, and usually 3 times around the winch? The angle of leverage is so long , (30'across 3") that it has no effect on the rotation of the mast. Sometimes I have to run up on deck, and pull the halyard out, then take up the slack with the other hand. Works Great for 3 years now.