Ive been having problems lately in playing hands like the following.
i play 200 nl at stars.
Limp mp1 with 55, pf raiser from co makes it 5 bb to go, i call.

flop comes down A 5 8 with 2 hearts. i check he bets 14, i call
(should i lead out and bet hear to disguise my hand? this guys a thinking player.)
turn come 10 spades. he bets 30, i check raise to 70. he thinks for awhile and folds.

2nd situation:
i have AA from BB. good player makes it 4 bb to go from mp. i re raise to 9 bb's. he calls.
frop comes down AQ4 raimbo.
how the heck do i play this?
so i play it the same as the last hand by check raising the turn.
i think he might've had AK because he thought a long time before folding and saying, " you've got a set huh?"

I dont like my play being as transparent as this...
when i have position, i have no problems. i think i extract value well.
however, in positions like this, i find myself not knowing exactly how to play it.
against a maniac/overly aggressive player slow playing makes sense.
it seems though, that against good thinking players betting out would be a good idea to trap these players.
my PT stats are 20/4.5 so that probably doesnt help my action either.