Thanks again for the input from all... it is greatly appreciated. Gaining these first hand experiences is what makes this board so invaluable and why I've read it through the years as my son has progressed through ranks, so to speak.
Bum - "Max Effort Velocity" is my own description, meant to deliniate the type of throwing that the program son is interested in will call for as opposed to a more mechanics based approach that you described previously... where maybe guys are isolating the bottom half, weight transfer, glove seperation, etc and then throwing a ball at maybe 75% effort as part of the process; ie working on mechanics without any real focus on generating velocity. My understanding of the off-season program we're considering is that they wrap up the 90 mins or so of fairly intense conditioning and drilling, and then spend a good half hour heating up the arms and throwing at max effort, radar guns tracking and being recorded, three times a week. This also includes the use of weighted balls, although using these is purely at each pitchers descretion. I have read with interest the debate on weighted balls on this forum over the past couple of years. The program is based largely on Ron Wolforth's approach.
But your last post on this thread really hammers home the crux of our dilemna. Your son is where mine hopes to be... where most every serious HS pitcher hopes to be. Son is serious about getting to the D1 level and recognizes fully that he has miles to go. Importantly to me, he wants to take on this off-season workout. In past years, I have basically dictated that he shut things down for a few months and recuperate, which he has done without much care one way or another. He also played football and hoops in past years. Now, he's become a year round baseball guy and after a freshman year where he got roughly 25 innings on the varsity hill, he has become hyper-focused on becoming a more competitive pitcher... both for HS and also for his summer team, which is among the more competitive rosters in our area... lots of talent to compete with for innings and starts. We all know that velocity is crucial in gaining attention, too important in my opinion but velo is what the scouts, camps, and summer and HS coaches look to first and foremost.
Your post hits it squarely on the head: what's the point in saving bullets if you end up getting passed by? Having read and studied on the topic of arm health a fair amount, my head says "shut him down for a couple of months"... but my gut says "now may be the time to let him go for it... get out of his way". Sort of "if not now, when?". Difficult to tell him "no go" on the off season program (despite a healthy savings in cash outlay for me) and then watch should he lose opportunity come Spring and Summer. All that said, son is still just 15 and heading into Soph season this Spring... so my current vaciliation on the matter is to force him to wait a year... let him develop physically a bit more... he is certainly still growing... and then think about this type program for next off-season, between his soph and junior years.
As always, interested in specific examples and expereinces from this board. Many thanks.