You are welcome for the info! I post a lot more fishing techniques on iceshanty because there is not a lot of info out there and basically techniques produce fish . The trout in the lake that you fish were accustomed to getting free meals because most anglers used the same setup as you did and were never caught. Now that you know the technique, fishing will become a bigger passion, when you start catching the “big ones.” It has taken me many years of “experimenting” to get consistent results especially with trolling for trout and they are lake specific. What works on one lake will not necessarily produce on another. I don’t keep any trout less than 15 inches but before being able to consistently catch fish I would keep the stockers and some would only be 10 inches. The flesh would be yellow and taste like liver because of the feed at the hatchery, but a couple of months in the lake and their flesh would become a nice bright orange from the insects they fed on. I just release the smaller ones to let them grow larger because the bigger ones are much more fun to catch and taste much better.
Another really good technique for catching large trout is flat lining a 2-1/8 inch Krocodile spoon, color of spoon is lake specific, approximately 200 yds behind the boat. As a reference 200yds is almost an empty spinning spool, but the spoon will only be down 15 feet in the thermocline. The troll speed is determined by how the tip of the rod is behaving. If you look at the tip it should be a steady motion of slight pulls it almost looks like a strike while bait fishing but it is the wobble of the spoon and a fish on is a big pull back on the rod. Just change the treble hook to a single swiash hook for easier release and it causes less damage to the fishes jaws.