Gil,
If Fox News ever gets an outdoor program, we should send them a script of some of our rants. We'd get picked up for sure.
I'm going to say this gil, and please don't take this the wrong way. You said something about catching the biggest fish available on your tackle. That IS the very nature of the problem here. Unless you're consistently throwing a heavier fly on weighted line under generation, under MOST conditions, you're not going to even be aware of the larger fish. I'm sure there are times other than the spawn that they move shallow, but I'll be honest, on one generator, I blow past most of the river and hit the high percentage areas...usually near deep water. The fish of decent size rarely use those runs, and 90% of my nicer fish come from 10% of the water [Buck Perry]. In fact, there have been times on that river during consistent flow and weather that me and shore have CALLED FISH ON THE CAST over 20". One time in 5 consecutive trips I took 5 consecutive browns between 20-24" from the exact same ten feet of water on the river. I say that not to brag, but as a testament to this...I didn't catch hardly ANY fish over 20" until I changed my tactic. Even under falling water, I didn't do that great. It wasn't until I began to fish generation above 1 gen and up to 3 that I began seeing consistent larger fish, and on 1, like I said there are good sections of the upper river specifically I just blow past. Not worth the time to waste. What I'm saying is...
...doing what you're doing, mostly wading and fishing smaller flies [I hardly throw anything under 5" and 3/4 of an ounce and have been lobbing 2 ounce crankbaits recently. Wait till I start whipping out my musky baits...] it wouldn't matter if every fish in there were 25" and up...you probably wouldn't catch any. I waded that river ALOT with smaller crankbaits, intensely over a concentrated span of time, and only at dusk would I take any fish over 20". Although I did get my 28.5" wading, it was under a near perfect weather condition which is what I attribute to that fish being where he was, as well as another occasion when myself and a flyfishing friend saw 3 fish on falling water, on a 70 degree day in late December, near or over 30", one of them with it's back out of the water at Betty's Island.
What little I've seen with these trout...the biggest ones only get active under flow or cover of darkness, my next foray, but only under near perfect weather conditions will they submit themselves to the ultra shallow water, at least in the Caney. Even my big one wading I got in a channel hugging the opposite shore right before the drop into the Betty's Island hole. You don't catch big bass beating the shore in the summertime very often...you gotta go deep. I don't think these big trout are much different most of the year. Now how to get down in those holes effectively under flow...