Perhaps with perfect trainee good trainer and 1 spot training could produce it. But you still need a good sublevel on your dude + better inside overall skills in reb and IS. I have tried ID for 1 spot and I have not seen it I had a pretty good trainee for that. There is no way you can pop it twise in a row with 2 spot training.
But after a friend of mine told me that his 6'2" and 18 year old player had 2 ups in OD in the last two weeks (also training pressure for PG/SG)
I am sure this thing written above is not doable 100%!!!