As everyone here is saying; "there possibly are as many approaches as there are responders."
We took a "shotgun" approach as we weren't really sure which would be best. The Travel team, in our area, was pretty much a given. He played the major events like PG at ECB but was first noticed and eventually recruited at a smaller Regional Tournament at UGA.
We targeted smaller Showcases, mostly at JUCO's, and had good results both in gaining him experience and getting interest.
We had interest at the Camp he went to for some three years but that's more of gamble for a position player. As he may not play the position they need. We found that most School camps invited players they were already interested in. We were a little naive in sending him to out of state camps. We learned it would have been smarter to send him closer to home where schools like to recruit.