I really appreciate your comments. Here's my thinking:
Calling a preflop raise w/33 -- I have 1/8 chance of connecting with 33 for trips, and will frequently take down a big pot when it does connect (at least 8x the raised pre-flop pot), especially when the opposition is holding KQ or AJ hand -- usually a raised pot. If it doesn't hit, 33 is easy to get away from (unlike 99 or TT.) I've had sneaky low trips smack me plenty, in spite of my own PFR while holding two face cards. If I am successful in limping in, fine, but my opposition may then have sneaky hands too, or are more easily scared off their hands.

10 cents on the turn -- I could have checked, or bet more.
I didn't want to bet more -- I thought opposition should be afraid after I called his raise on the flop (he did have that crappy kicker,) And hoped he thought I had a king or just one three. I was afraid to merely check the turn, as sometimes that screams BIG HAND. I was hoping for opposition to check raise me there on the turn, like he wound up doing on the river.

Am I off here? Thanks again for the comments.