It was an educated guess but I guess not so much educated since I've only trained PF/C's so far in my BB career.
I just assumed that if you were working solely on a PG with HoF potential that you'd only focus on the above high skills. Also since many players start out with other non essential stats at weird levels, I just threw some numbers out there. Do guards in training really receive a ton of secondary pops in the big man skills?
So far in my big man training, my players have only received 1 OD pop max, per player in roughly 2-3 seasons of training.
ID is trained as a secondary skill for pressure, while OD is not a secondary skill for any of the inside trainings. It doesn't pop exceptionally quickly as a secondary, but I think even an 8 OD / 1.00 ID trainee would pop at least three times over the 12 levels of OD training. Just glancing at the training project data, it looks like they have pressure giving about 1/4 the training for ID as it does for OD for a 6'0 player - so ignoring the elastic effect, it probably would be at least 4ID when finished. Factoring in the elastic effect would add another level at least, and of course starting level and sublevel.