Interesting discussion but I still stand by my opinions on use of the radar gun.
Your reply about comparing your son to another pitchers velocity shows how much it means to YOU that his success is important and I am glad that you are letting him realize what HE needs to do.
Maybe I find some of this stuff amusing because we've been through it, but I don't remember us being so hung up on velocity as some folks are these days. Mine is a RHP who still, IMO, hasn't reached his full potential and he is 24. So there are lots of years ahead of you, don't stress yourself out while he is still in HS.
I guess the velo things is because of the huge signing $$ they get nowadays and visions of sugarplums dancing in everyone's head, but I got to tell you, in my opinion, it doesn't work that way for most.
Don't take it personally, just a conclusion that I have come to these days.