This is a hard question to answer. There have been times when I sat way to long waiting for the fish to bite and get nothing to show for it. Then there have been other times that I wished I just stuck it out and stayed where I was catching a fish every hour instead of burning fuel to go to some distant place just to find someone already there or the fish not biting there at all. But normally I will stay with a spot if I know there are crappie on it for at least 30 minutes to give them time to settle down. Sometime pulling a fish out of a group of fish will spook them. Sometimes the fish are moving and will be on and off the spot you are fishing. The main thing is it is hard to leave biting fish to go find other biting fish. Like Ketchn said when he is bank fishing he is more patient and sometimes that pays off in the boat also.