100NL
3 folds
Btn ($500) opens 2.5 have him tagged as a shark.
Sb calls (fish)
Hero BB ($108) Ts7s calls.
Flop (7.5) Th7h8c
Sb X
Hero donk $2.50 good board for my range.
Btn $8.50
Sb folds
I call.
Turn (24.50) T877hh
I check
Btn $22
I call.
River (68.5) T8772
I check
Btn $34
Hero all in $75
Btn folds.

Should we ever 3 bet flop? Raise turn? Thoughts on all streets?