standballdad,
That is a great question. I wish I could give you an answer that was 100% accurate.
As a parent, if you truly understand baseball, you should know. Problem is, as a parent, it is very easy to see things that just aren't there.
Here are some ideas...
How does he compete where he now plays? Is he one of the best? Is he a good player, but not a standout? Is he average? Most average HS players don't go on to the next level.
Have you seen players perform that are among those getting drafted or getting college offers?
Have you watched college baseball at the various divisions?
Do you have someone you trust that will give you an unbiased opinion, before you spend money getting one from us?
How old is he, how mature is he? sometimes younger yet to be developed kids create more interest than overly developed physical kids. The over developed need to have what it takes and show it. the more projectable types leave lots of room to consider. Sometimes it is worth it for them to attend just for the experience.
Check out the profiles of those getting drafted, going to college, etc., on our site. Look at the running times, throwing velocity, pop times if your a catcher, scouting report and other info. Find out what the average is for all these things. Then compare your son. I would say that if he falls well below average in every area, I would do something else other than PG.
Does he have at least one of the following skills... Throwing, fielding, running, hitting, hit with power! if so he will create interest at a showcase. Maybe not so much at a tournament unless he shows that ability. If he does not have a standout tool, but he's a very good player, his best chance would be to play in the tournaments.
If he is a pitcher, velocity always stands out, but other things are also important. Does he have decent secondary pitches, can he control his pitches? Does he get movement on his pitches? Is his delivery and arm action smooth or violent? does he project? (that is the hard one)
I hope that helps a little.