I have found a couple things that make Rochester reservoir fishing a little more successful. Keep you line and jigs light and small. Yes icefishing jigs is an excellent choice. Tipped with a waxworm. You have to have a little movement, can’t dead fish. Toss it out then turn half a turn and stop for about 5 seconds, then repeat until back to shore. Then start it all over again. They will usually hit it at the stop as the jig is fluttering back down. Or you can give it a sharp little pop to get the jig to dance.
Pop, stop a few seconds, pop again.
I have found another necessary technique. Start by casting out as far as you can, working it, like described above. When you get a hit, remember the zone you were in. Then the next cast, cast beyond that zone a few more feet, working it slowly back into the hot area. Never cast right on top of the zone as the little bit of splash can scare fish, especially up in the shallows. Also one of the most important things to remember is depth. Start up short, maybe only a couple feet below the bobber. Give it a few casts and if nothing, then move it down maybe only 6 inches and start all over until you find where they are at. Yes, as little as 6 inches can make a huge difference. Game Haven is a shallow bet, but Willow Creek, you might have to fish as deep as 6 feet. Bottom line is experiment with the depth of you bobber and just because they were at one level one day, doesn’t mean they will be there again today. I am guilty of getting lazy and forgetting to do this, but when I start doing it, usually it means more hits and fish in the bucket. 
LOVE