Only thing I have not tryed yet is:
PG: Starter P1, Sub P1, Sub P2, reserve P1 (add reserve P2 if you feel like it) = 36+5+5+2 (extra 2 but that would make 50 mins) so that should net you 48 minutes in theory. Never tryed it yet.
Using starter in any sub spot gives him 5 mins instead of 10.