I troll alot for walley also. Inline planer boards with reef runners at night and crawler harness with snap weights during the day. Still a greenhorn at it but seems like early in the spring i do best in shallow water 8-12 feet, where the water warms up first and the bait fish collect. As the summer gets goin and the water warms you have to gradually keep fishing deeper and deeper water. Then in the fall start moving in shallower again. When trollin for em its a fine balance of speed, water depth, and depth of the bait your runnin. It can get quite interesting when you got 6-8 lines in the water and ya start nailin fish! You find yourself workin yer butt off tryin to keep em all in the water! I love it!