25/50 turn semi bluff vs titsahoy - ok or spew?

[iwantbooze]

Titsahoy is a reg 25/50 and 50/100 on ipoker,

He's been playing about 62% of pots from the SB.

I've been mixing up my play a fair bit but not sure if he realises it as not many hands were going to showdown.

He seems to be firing a bit when I've shown weakness, but I think he's rarely got air on the turn here.

Dealt to Hero [9c 8c]
TitsAhoy: Raise $150.00
Hero: Call $125.00
*** FLOP *** [Qh Ac 2c]
Hero: Bet $250.00
TitsAhoy: Raise $820.00
Hero: Call $570.00
*** TURN *** [9s]
Hero: Check
TitsAhoy: Bet $1,700.00
Hero: Raise $6,791.00