hey,i fish the swift river in belchertown,ma.the winsor dam you mention i assume is the one at quabbin res.i fish on the other side of rte.9.it's called hatchery hole.i have learned that the smaller the fly the better.i use a 3wt.7'6" fenwick, 8x tippet and a 28 or 26 fly.i never get skunked.contact me if you would like any more info.swift river down by the winsor dam. crystal clear water we could see the trout we just could'nt get them to bite.