Actually
OD gives about a pop and a half per season (10%) 18 yrs any height
1 on 1 for a 7 footer 18 yr old gives IS (16%) and JS (22%)
So, to sum it up, over the course of a season handling training gets 3 players roughly 1.5 pops of OD outside of the HN and DR. 1 on 1 gets 5 players about 5 pops each between IS (2+) and JS(3+), outside of the DR and HN.