Wow, thanks guys. All the responses to my JJ hand were great and very insightful looks into your thought processes.
fwiw here was the result:
PokerStars No-Limit Hold'em, $0.50 BB (6 handed)
Hand History converter Courtesy of
PokerZion.com
UTG ($57.90)
MP ($26.80)
CO ($48.90)
Button ($65)
jb ($52)
BB ($102.60)
Preflop: jb is SB with J[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
UTG calls $0.50, <font color="#666666">
3 folds</font>, <font color="#CC3333">jb raises to $2.5</font>, <font color="#666666">
1 fold</font>, UTG calls $2.
Flop: ($5.50) 4[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">jb bets $4.25</font>, UTG calls $4.25.
Turn: ($14) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">jb bets $11.25</font>, UTG calls $11.25.
River: ($36.50) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">jb bets $15</font>, <font color="#CC3333">UTG raises to $39.9</font>, jb calls $19 (All-In).
Final Pot: $110.40
Results:
jb has Js Jd (two pair, jacks and fours).
UTG has 9h 9d (full house, nines full of fours).
Outcome: UTG wins $110.40.
My thought process on the hand was fairly close to Mike's thoughts in his response. I chose to bet/fold but then thought about it too long and ended up calling due to pot odds. (I know, sort of the reverse of planning a stop-and-go and then not going!)
I believe bet/fold would be a good river line if we were deeper but I think we were too shallow here. I have to do a lot more thinking about all your responses.