Trolling has always been a good way for me to learn a lake. Sometimes I catch nice walleyes that way.
The lake was 78 degrees surface temp, calm, and almost completely empty of boats. Trolled for about three hours. The new Force tm does a great job.
The fist several runs, I ran the bait at 15' in 15 to 20' of water. After that I switched to 20' and ran it in 20 to 25' of water. What fish I marked were deeper, between 25 and 30 feet, and singles.
The fist hit was strong and the fish immediately started to take line. I tried to pretend it was a large hybrid bass or a record walleye, but I suspected the truth.
I finally landed this ugly gent. Just under 10 pounds.
That was the last hit as well.