Strongly disagree with the statement that blowing a team out has no effect on trainees getting 48+ minutes. Wacky things happen in garbage time. I don't really recommend CPDC either.
[2]
blowing out is non advisable if you want your player to play 48 min.
play to lose on scrimmages. assign your center as PG, SG as PF, choose the worse tactics, anything you can do to avoid winning, or worse, blowing out.
9 players is also key. don't play with more than 9 players if you want 48 min.
then pray for your trainee don't commit many fouls and don't get injured.
that's pretty much it. works 80% of the time. there is no 100% warranty. still the best way to train. when it doesn't work, try to use his minutes changing the training to 1-on-1, stamina or free throws.