Trolling speed can be critical at times so its important to try going different speeds from time to time. Especially if you not getting bit.
Pay attention during turns especially. If your only getting hits on the outside rods, thats a sure sign that you need to pick up you speed.
If your only getting bit on the inside rods, then you most likely need to slow down your trolling speed.
Time of day also seems to be playing a pretty big role as to when these bigger walleyes are willing to bite. We can spend several hours getting very few bites then just light them up for the next one to two hours. It can make for some hectic boat activity when you pounding big fish and in some cases hooking up with doubles.