I am kinda new to this trolling thing and the more I go the more questions I have. I trolled last Sat in about 12 feet of water and run the poles about 10 feet deep. I didn't catch much (1) but I really felt like the fish were there. So I raced home after work yesterday trolled the same spot but run the poles only 3 to 5 feet deep and caught 12 in 1.5 hours. What strategy you guys use to figure out how deep to run the baits while trolling? Any rules of thumb?