Are you only using live bait, or are you using artificial too? If only using live bait, I would suggest trying a few artificial baits to give the fish a moving target and a little different look. Try a popper as someone else mentioned. I grew up fishing a 1 acre pond that I pretty much had to myself. For me, buzzbaIts, poppers, and weightless senkos always yielded the best results. If you try a popper, don't forget to let it soak from time to time. I'd let mine sit for up to a minute sometimes...and then just barely twitch it, and that would often trigger a bite. Good luck!!