Live 2/5 Hand

[doctorkc]

Deep stack 2/5 Live game at Parx Casino, 9 handed.

UTG ($400ish) limps
Folds to Hero at the CO with Th7h
Hero ($1,600) raises to $30 (pretty standard raise at 2/5 fishy live games).
BTN ($900) calls (live reg., lack of poker fundamental)
SB folds
BB ($1,200) calls (retarded fish)
UTG calls

Flop ($122) 7d8h9d
BB checks,
UTG checks,
Hero checks,
BTN bets $60,
BB calls,
Hero calls,

Turn ($ 302) 7c
BB checks,
Hero donks for $150 (I am not sure if this is a good donk bet or not, I feel I can get value from A9, 89, or TT)
BTN calls
BB raises to $310, I think his range here is mostly a 7, possibly a straight, and rarely a boat (base on history).
Hero calls,
BTN calls,

River ($1,232) Jc
BB checks,
Hero checks, I don't think I can get a worse hand to call here too often.
BTN shoves for $600
BB (fish) tanked for 10 minutes and show his hand to the player next to him, and complains about the river. I called the clock on him. He calls

Pot(around $2,400)

Does BTN have boat here almost everytime?
Was my line on the turn bad?
Please comment.

Thanks.