Let's see:
A) With no read, I think call, check/call - but perhaps I'm being too passive... something I'm trying to fix by posting/reading here. Trying to think more aggressively - maybe call, bet/fold is the right move standard move.
B) Against a TAG, would anyone even consider folding the turn raise?? Again, maybe I'm just too passive.
Against a LAG, maybe more likely to call, check/call
C) MP2 possible hands:
TAG: A3s, 22, 33, 44, 55, A5s.
LAG: Above hands & 25s, 24s, 34s, 35s or any two/bluff