This is good info. And like he said, once you figure out this early sason bite, it's usually pretty reliable to pattern. And it's different on every body of water. On my home lake, just after ice out, you can walk across them in this huge cove where the main stream comes into the lake. It's mostly 3-5 ft with some pockets that get 9-11 ft deep; that's it, no deep water bite here, no ledges etc...just a big bowl where the water warms faster and bait starts moving up that stream in the spring and the bass follow in herds. And it's the same thing year after year; love it! Oh, and if you aren't already, throw a suspending jerkbait. And try different colors of it.
Good luck and keep us posted.