See, now you mention the name of the lakes and we have something to go on. I'll bet SlabsRus (Frank) may have some info for you on Pratt Lake but it just so happens that I have fished crappies in Cranberry lake. Almost 1 year ago to the day as a matter of fact. Come out of the boat launch and go left. There will be a small bay on your left. Fish the weed line. Continue on down the lake (and across) and there is a lone house with a nice back yard. I started by that house and drifted back across the lake (about 18 feet of water give or take) towards the swimming hole. I floated slip bobbers and minnows. I really enjoyed this lake and wish I had more time to explore it but a friend of mine and I were pre-fishing for a tournament (and I was guiding a bear trip ontop of that). Let us know how you do. I will be interested to find out as I have wanted to take a trip back to this lake! FYI, when I am fishing bodies of water to locate fish (before I had 3 grand worth of electronics) I used slip bobbers to help very depth and target and locate fish. Come to think of it, I should start doing that again!