PokerStars No-Limit Hold'em, $1.00 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP1 ($27.55)
MP2 ($15.85)
CO ($48.90)
Button ($162.40)
SB ($82.90)
Hero ($169.60)
UTG ($66)
UTG+1 ($103.45)

Preflop: Hero is BB with 6, 7.
5 folds, Button raises to $3, 1 fold, Hero calls $2.

Flop: ($6.50) 6, 7, 9 (2 players)
Hero checks, Button bets $3, Hero raises to $11, Button raises to $29, Hero ???

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No read on the Button at the time, my PAHUD had not kicked in yet.

How do you like PF, and the flop move?

What's your move after the 3-bet?