Bodog 100k, not knowing when to stop the bluffing apparently

[PokerAmateur4]

8 Players. Bodog 100k. Hero in BB, 100/200.

Folds to Villain(t4112) who calls in 3rd position, folds to Sb(t2345) Calls, Hero(t2500) checks(10[img]/images/graemlins/diamond.gif[/img] k[img]/images/graemlins/spade.gif[/img]).

2 [img]/images/graemlins/club.gif[/img] 4 [img]/images/graemlins/spade.gif[/img] 5 [img]/images/graemlins/club.gif[/img]
SB check, Hero bet (t300), Villain calls, SB folds

Pot (t1200)

8 [img]/images/graemlins/heart.gif[/img] Hero bets 800, Villain calls

6
[img]/images/graemlins/heart.gif[/img] Hero all in 1200, Villain calls
Villains hand in white:<font color="white">"3h 3c"</font>

How would you of played this differently from start to finish?
I started getting fancy ideas of how he had nothing or a flush draw at the turn, I believe the turn bet was the worst. Perhaps on the turn I should of check folded? Thanks for your help.