A lot of this would depend on the spot itself. If it is a long run or a "spot" on a big river ( BOW), with a lot of fish, I do not think it would factor as much. If it were a smaller river with less fish then, yes, it would factor in hurting that particular spot. Again there is the factor of how often is this spot being worked.
Then, maybe the people that fish this place often are catching nada. Doubtful if thet are there that often.