Re: Fisherman at HunterPark youth section Grove City
Holy crow, 3'+ of leader? That's lots of leader lol. I usually drop about 1' of leader off the swivel, but the less bulky line you have near the bait probably the better. As far as bait goes, what kind of worms were you using? I find that those springy little red worms work great for trout. Also, and this is just me, I don't use any hooks with live bait bigger than #10 for trout. My wife's stepdad was fishing with me once using #4s, and I was using #12s. We were casting within 10 feet of each other in Elton Sportsmen's dam. I caught ~45 trout. He caught none, that is until he switched down hook sizes. #8s may be a reasonable size, I never really tried.
Techniques: maybe you already have this part down, but I figure it can't hurt to tell you. Find places where there are "slack" areas in the current, where the faster water meets the slow water. Trout will lay in that kind of "middle" water to feed b/c it helps them conserve energy. With a spinning rod (or closed-face rod, whatever they are using), pinch on a small splitshot on your leader, maybe two if the current is fast. Find one of those current seams, toss the bait to the top of the seam. Keep as much slack out of the line as possible, and hold the line between your fingers. When a trout hits, you will feel a series of bumps against the line. You may also feel these bumps whenever the bait touches rocks or subsurface debris, so with live bait wait until it bumps a few times in the same spot, then set the hook.
Youtube has an excellent collection of videos on trout fishing, both in lakes and on rivers and streams. I would take a look at some of them if I were you, try to pick up some techniques from there. It's really just something that comes with practice. Good luck to you and your boys with getting started in a great sport!
A bad day hunting rabbits beats a good day of anything else!