Join Date: Apr 2006
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"more purchase on the winches which are badly worn, "
Are you aware that you can resurface those? A good local welding or polishing or chroming shop should be able to offer you options to resurface the drums in various ways, texturing the metal, flame spraying new metal to build them up...all sorts of options that will leave them looking and working as new.
And if you want to try an inexpensive DIY approach, you can clean the drums, paint them with an epoxy and an "antiskid" ingredient (just like an antiskid deck) using whatever you consider a suitable "abrasive" to give them more grip. Sand, abrasive powder, crushed walnut shells, etc. For the casual sailor it should last for a couple of years.
Personally I'd rather refinish the winch drums than mess around with the extra winches (which are really just adding friction) or mess around with ratchet blocks, which can get balky as they age.
That's also ignoring your genoa sheets--some are simply way more slick to grab, slick on the winch as well, or too thin to get a good grip on.