Local 2-5 500nl at casino
Hero has 77 in OTB 800 deep.
Looser random player makes it 20 to go in MP with 2k back, hero calls, BB calls with 600 back.
Flop comes J56 rainbow. BB checks, original raiser checks, Hero bets 40 for equity protection.
BB calls, original raiser folds.
Put his range on J9 and above, 88, 99, 10,10 and some straight draws.
Turn is a K.
He checks, Hero decides to turn made hand into bluff and bets 90.
Wondering if this is a good spot to turn my hand into a bluff or should I just check turn because I might have the best hand some of the time against draws.?