I spent many years fishing trout with both lures and flies. We did a lot of fly fishing for a period of time and I learned how to tie flies and all that. Dry flies were my favorite but caught many more on wet flies and nymphs. No indicators - my father wasn't into making anything easier.
If I was gonna go river fishing after big trout only, I would throw a 3-inch rapala or yozuri lure. Twitch it as you reel it in.
90% of the time, we would catch the cootie out of trout on the small countdown rapalas, spoons, and sometimes we used spinners. Would reel the spinners in with the current and have it banging off of rocks. Would fish the lures down, cross, and up-current. Nothing better than having it sweep across the lower part of a pool twitching from side to side - the fish would absolutely crush them.
We used to do brookie fishing on those little trickles, hopping from rock to rock and log to log, dropping a worm or fly next to eddies and rocks. Tons of fun doing that. Not big fish tho.
My mom and dad went and did some traveling a few years back - she was using a 1/8 or 1/4 oz little cleo spoon and had the fly fishermen chasing her around cause she was catching a lot of fish. LOL! That gal can fish, even in her age she has me take her out fishing.
There is a time and place for both methods. I think fishing a small river with a fly rod during a mayfly hatch is very relaxing and therapeutic. If I just want to run&gun to catch some fish, it will likely be with a spinning rod.