My dad has a name for those that come and park or try to fish where you are upon seeing you catch one. Parasites. Its usually not as bad trolling or long lining but try anchoring on a tree top and catch a fish this time of year and on into April and they will cover you up. Years ago we went to the middle of the river as a prank and anchored and fished with just a heavy lead weight and would wind it up like we had a fish every time some one would come by and by the time we left there were 15 boats around us setting out in 50 ft of water