We trolled about 3 hrs. yesterday. Picked up only 1 catfish. We were where we were last Sat. the screen was LOADED. They were not biting that good but at least you knew where they were. Yesterday we got excited when we seen one fish on the sonar unit. A few weeks ago we trolled and got a few at around 50 feet, then we went to 42 ft and the screen was loaded. We went to 42 ft the next time out - they weren't there. We found them at 50 to 55 ft. The next time out we went to 50 to 55 ft. - they weren't there we went to 55 to 61 ft and found them. Now again they are gone???? I've lost my carma.