Use a sliding bobber setup and a long rod. It will allow you to cast out farther and fish deeper from shore. Try sliding your stop knot up your line until your bobber doesn't stand up. Reel in and slide your knot down toward your bait about a foot and cast again. Keep doing this until you find out how deep the water is and then fish about a foot or less off the bottom. Doesn't take long to do this. Make sure you have enough weight on your line to hold the bobber low in the water. Makes it easier for the fish to pull it under. Just one of many ways you'll find that works from shore.