Tips on Perch and Walleye Fishing

Hi I was wondering if you could help me? I was trying to find a place I could ask you guys a couple questions about a local lake I fish on your website but couldn’t. But I fish Brushy Creek Lake in Iowa. Its a man made lake with sunken bridges and standing dead trees everywhere in the water. There is also old creek beds under the water that cut across the lake. I was wondering what tips you guys could give me on finding the walleyes and what I should use and also I really like to fish for perch but I’ve never had much luck hitting them hard at Brushy. I was wondering what tips you guys could possibly give me. Here is a picture of the lake and depths thanks a ton.

open this link, http://www.iowadnr.gov/Portals/idnr/uploads/fish/maps/BRC94.pdf, the map you posted was difficult to see anything on but i searched and found this one, it even lists gps coordinates to cribs/rock piles and other features, on the NW shore of the lake is a string of cribs and rockpiles between 10-20 FOW where a creek channel meets the main channel that looks sweet use the GPS coords (look at features BP 2/3 and RP 13/14) to find/jig the structures and set boards around them, otherwise on the far north end there is a big flat 10-20 FOW and a smaller flat 20-30 along the confluence of two channels, that might be worth a poke but prob do a lot of drilling and searching, I generally like to fish the inflow end of resevoirs especially later in the season (high oxygen content= more active fish), plenty of good spots though and that map your DNR puts out is pretty awesome