Re: What size winches?
With the number of boats being scrapped lately, good used winches should be in good supply, at good prices. I bought my Arco 40s at a dock sale in 1995 for $150 each. Don't skimp on size, just go a couple of sizes bigger than other boats in your size range are using.
Brent Swain, Boat designer, Builder, and author of "Origami Metal Boatbuilding"