Re: Fairing Compounds, what do "you" use?
Doing this kind of work around here this time of year, I'd definitely put up a plastic hoarding (likely required by the yard in any event) and put a heater in it... very few epoxies are likely to cure properly at those temps.
We had good luck with West's G-flex resin and fillers - not so much as a generally fairing compound but specifically in the hull/keel joint area. We did have some difficulty finding it in Canada, (WM claimed to be unable to import it, but Steveston had some in stock)
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)