I need to go up to the top of my Hunter 356 mast to replace the wind instrument transducer. I have a bosuns chair and tool bag. Planning on dropping roller furling main and using the relatively new spectra main halyard bowlined to chair, and using the backup halyard which is commonly used as the boom topping lift, as a backup. Main halyard goes to one jib sheet cabintop winch with backup halyard/safety on the other. One person on each winch. It's a fractional rig, mast clearance height is 58', and I weigh just under 100kg. Advice, comments, thoughts? Thanks all