Live 5-10 at Harrahs New Orleans

[The Big Easy]

Good game. I bought in for $1200 and am up to $2500 in about 2 hours. Villain in this hand is very tight and is not likely to make a move. He has $900 and I cover.

UTG limps, folds to MP who makes it $45 to go (MP is TAG), folded to me in the BB and I call with 6 [img]/images/graemlins/diamond.gif[/img]6 [img]/images/graemlins/club.gif[/img]. UTG calls. 3 to the flop. $140 in the pot.

Flop 7 [img]/images/graemlins/diamond.gif[/img]6 [img]/images/graemlins/club.gif[/img]5 [img]/images/graemlins/diamond.gif[/img]

I check (first mistake?), UTG checks, MP bets $100. I smooth call (Second Mistake), UTG then check raises to $300. MP folds. Now $640 in the pot, villain has $560 behind. I deliberate and go all in.

Now, I limited UTG's range to 88,77,55, maybe A [img]/images/graemlins/diamond.gif[/img]8 [img]/images/graemlins/diamond.gif[/img]. Should I have smoothed called and gone all in on the turn regardless of what the card was? I did not lead out on the flop b/c I knew MP would make a standard continuation bet. I got what I wanted, but did not execute the check raise. My real question is what do you do facing the $300 check raise? Is this an obvious squeeze?

Thanks in advance