A lot also has to do with whether or not the boy is playing JV or varsity and why.
In some cases the boy is on JV because of solid players ahead of him at the varsity level---his coach can hopefully tell you the facts on the boy.
If the boy is not on varsity due to the simple fact that he does not belong on varsity yet then it might be well for him to forego showcases until such time that he is a solid varsity contributor. Too much too soon can destroy the boys confidence.
Fungo makes a great point about the parents--- for them a showcase can be key in their glasses getting the proper color lens.I think showcases can be more important in the initial stages for the parents than for the player. The sooner the parents realize the talent level of their son the better off they, parents and son, will be.
It is not an easy judgment to make but you want it to be the correct one coming out of the box.
Tom Rizzi
www.collegeselect.org