My .02..............Remember what happened last year end of March first of April? It got warm...real warm. I would be looking in spots where no depth finder is needed. 2-4 FOW. It don't take long for that lake to warm up. I would be jiggin if I were you. If your renting a boat, I would make sure you have a "sculling oar", I would only use your trolling motor if needed (ie...W~I~N~D~Y). Sit right up front and scull, be quiet as you can. Fish Trees, fish slow, fish on or close to bottom. Set it down slow, bring it up slow. Fish the Lilly Pads, same method...