Otsego can be hit or miss, but it can be good if you hit it right. Bring along some jigging stuff. If you are marking fish on the bottom in 60-150 feet of water, jig for lake trout. We've had good success on Otego, along with Cayuga and Owasco while vertical jigging. I usually use a 1 ounce jighead tipped with a paddletail or fluke style plastic, and spoons such as crippled herrings and buckshot rattle spoons work well too.
Basically, try to keep the boat still so that you are fishing vertical (if it is windy, it helps to have a drift sock or bucket, trolling motor, or just kick the big motor into gear now and then). Good enough electronics can show the jig drop, along with fish that are "chasing" it. What a blast when multiple lake trout are streaking toward a jig...if they don't hit it while jigging down there, crank it in almost as fast as you can reel and you will be surprised how many hit it on the way up (sometimes very close to the boat, even when the water is hot).