While fishing thursday in a pond, I caught a bunch of 0-2lb bass in about 11'fow up towards the bank using c-rig worm and weightless worm. By the dam in about 20'fow (about the deepest part of the pond) I marked a large school (approx 20, relative for a pond) of bass in 20-15'fow. I caught one (3lbs) on a c-rig and had another chase the worm up and turn away at the boat when I reeled my rig in. Other than that, no takes. I tried jigs, t-rig worm, crank baits, jerk baits, and drop shotting. The two fish I saw from the school were decent fish, and the markings on the sonar showed that most were probably large fish as well. Is there any advice on getting more of them next time. I am assuming that they were willing to eat since one ate and another was chasing my worm. Is there anything I should try differently, lures or tactics wise? Any input is appreciated, thanks.