There are thousands of stories similar to the one linked below. Every college wants players to show up at their camp. But they usually first find them elsewhere. College camps need to be open to all players, so for every prospect they want, they will get 25 or more they have no interest in. While this is true, it can still be beneficial if players learn something from those camps. It is always best when multiple colleges want the same player. Being on a good travel team or attending good showcases are still the best way. Just make sure you don't skip over the word "good"