Whats our general flop plan here? Only reads I have is LJ is a fish. If we bet and get raised do we call?

PokerStars - $0.50 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

BTN: 105.94 BB (VPIP: 23.81, PFR: 16.67, 3Bet Preflop: 9.52, Hands: 43)
SB: 324.3 BB (VPIP: 16.74, PFR: 8.22, 3Bet Preflop: 0.00, Hands: 224)
Hero (BB): 101.5 BB
UTG: 142.82 BB (VPIP: 29.51, PFR: 22.40, 3Bet Preflop: 10.39, Hands: 378)
MP: 79.26 BB (VPIP: 52.94, PFR: 41.18, 3Bet Preflop: 20.00, Hands: 17)
CO: 96.5 BB (VPIP: 7.69, PFR: 7.69, 3Bet Preflop: 0.00, Hands: 13)

SB posts SB 0.5 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has J J

fold, MP raises to 3 BB, CO calls 3 BB, fold, fold, Hero raises to 12.5 BB, MP calls 9.5 BB, CO calls 9.5 BB

Flop: (38 BB, 3 players) 6 4 7

???

bet/fold looks good

checking range

If it had been heads up, then a big c-bet at a reasonably high frequency for your range as a whole (and including this hand) might be appropriate, but the fact it's multiway probably turns this into a high frequency check for your range.

Check call? And fold to further agression?

I like 16-17 pre if open raiser is a fish
multi way oop, this is a c/c
if someone bets the flop and everybody continues, you can c/f all the ugly turns no worries

Yeah, check-call and see what happens on the turn. Bear in mind that you can/should check-call QQ+ as well, so if the turn is an overcard to the jacks and there is still some action, you can check-fold there (and continue with sets, top pair+FD etc). If it's still multiway on the turn, you can even check-fold on lower cards whether they complete some straights/two pairs or not. It's often the case that someone will take a stab on the flop, and then give up when you call... unless they can beat an overpair. People are pretty honest in big multiway pots. I used to hate the check-call game, but now I'm quite comfortable with it. Villains basically tell you how strong their hands are if you give them the chance.

Pretty much what Arty said. Check call OTF and re-evaluate OTT.

We're obviously checking an overwhelming percentage here, but I'd make a case for betting some jacks, especially against two likely fish. This hand hates every turn and flop flats are the action it hates to see the least.

If villains were competent, we could fill out our range with KQss type bluffs and some nutted hands. Our checking range doesn't need a whole lot of trapping nutted hands at this SPR given the concentration of overpairs and nut draws in our range.