"All of the romance of trout fishing exists in the mind of the angler and is in no way shared by the fish" Harold Blaisdell, The Philosophical Fisherman
Backcast to when I was a starving college student four decades ago. I'm being dropped off at Phillips Brook, a small stream that runs from Ashburnham to Fitchburg on a very early Saturday morning. It has some natives and gets stocked in the spring but this is the 3rd week of June. "It's too low and warm and it's been fished out" said the local expert but I went anyway with my stout fiberglass rod,box of standard wets and no waders (starving college student,remember). I spent about 7 hours fishing that diminutive stream and took over two dozen trout, mostly bows but also some of those natives. I pulled that trick again for the next few years until moving out of the area and that trick was fishing a stream AFTER it's supposed to be fished out and doing well.
Now, back to the present. There is a stream that flows behind our house that has some native fish but mostly stocked trout. Fuller's book "Trout Streams of Southern New England" has this to say about the Mill River:"It's waters in Williamsburg flit nicely in an array of pools, riffles and easy rapids, but the stream does suffer from high summer temperatures". That statement is usually the kiss of death for a trout stream but it isn't so. I've caught trout there in the summer and know of others who have done the same. The DFW surveyed the river two Septembers ago and found trout and other cold water critters. The waters are not "warm" but actually surprisingly cool in the summer. One local college stated that the "cool" water during the summer extended much further downstream than thought (there goes conventional wisdom for you). In other words, this marginal river is not marginal at all.
These kind of streams are all over the State and you know where they are. They get hammered in the spring for the easy fish and then by Memorial Day they are vacant. Go early in the morning or at dusk to catch the trout that are there. Cool zones exist everywhere in a trout stream. Go find them!!
Advice- Please do not ask me if a certain stream has been stocked. I don't chase stocking trucks and you shouldn't either. Every stream will get its fish in the next two months so chill out and fish anyway and everywhere.
Advice - Take pride in your fly tying. This is the art form of our sport and should be treated as such. A well crafted fly is a pleasure to create and to look at and it will also catch trout. Resist the temptation to "dumb it down" by creating concoctions that can't represent anything found in the natural world. You can do better!