Was noticing all of the back and forth discussion about PG's grades and rankings so I thought that I would try to offer another opinion.
I asked a college coach (that I know pretty well) about the PG grades and rankings. The question was to him was "what info do you gather before you go watch a player that your staff has an interest in. Do you use the grades and rankings," although I knew the answer.
Reply, PG grades and rankings mean NOTHING. Speaking for himself of course, he relies only on live and past video and stats from Diamondcast, as do most coaches and scouts. He, like most, forms his own opinion.
This coach brings his work tools, his own stopwatch for the 60 and his own gun for velo. If he sees what he likes he goes to the travel teams web site to get personal info on the player. This is standard procedure for most.
Sometimes you might see a coach just sitting in the stands, more than likely he is there as the second pair of eyes, before a decision is made, although the entire staff has seen the Diamond Cast video and gathered what's needed to move forward in the process. It's not because he saw the grade or ranking!
Those grades and rankings are more than likely for players and parents.
As far as write ups on the players, supposedly they are not done by the HS assistants you see sitting there. My understanding is that these write ups are done independently and not by PG. Those kids are there for recording velo. The coach that I know coached some of them in holding the gun correctly.
That's why coaches bring their own equipment.
Sometimes coaches see a player that they may feel would be of interest to another coach. They will pass on that info.
So as that old saying goes, you never know who is watching!