I open the HJ with AsJs, Laggy guy calls in CO, Too loose tagish reg calls on the button, loose passive calls in SB and the BB calls...He is loose, His flop donk is probably not super strong. it could be any pair or draw. It could be a monster but I feel he would CR those.

The game has had an average amount of aggression post flop.

6hTh8s......SB checks, BB donks

Is this a peel? What if I didn't have the back door flush draw?

Any reason to raise?

I'm not a fan of your relative position, especially vs the CO. This flop smashes limper and caller ranges, especially for people who know where the raise button is. There are 11 small bets in the pot. Your 2OC + BDFD + dubious 1cBDSD are definitely worth 1 more bet. What are your chances it is going to be more, especially on the installment plan?

Out of curiosity, how do you play AA, TT, and 88 on this flop with this action? Sure. If you think you're doing OK equity-wise vs the donk and vs the field's calling range, let's buy back the button. How likely are we to get it? How likely is this situation to be good for the parlay of donk means we have decent outs (or are ahead), people behind will respect our raise and fold stuff we want them to, and they aren't just smashing this connected flop...

You also don't induce a raise that leads to a 3 bet that you can't call. I'm probably not LAG enough in this spot. My reading of ranges, my uncertainty that I'm doing great vs donking range, and my desire not to give the donk bettor an expert B3B, I probably don't do it. I suspect people who play better than me do, in spots. I do think about it.

The pot is big, but I can walk away from this one. There are two players left to act who are capable of raising and bad position for the rest of the hand makes me not like this one. Also, this is a flop that looks like it will want to give action in general. Basically any pair >= 66 has a reason to want to play, there's a flush draw on the board, and tons of middling stuff that could have connected.

Not every big pot is your pot to win.

(By the way, this is a super easy peel if you were closing the action somehow. I think relative position to the bettor and the rest of the field is what turns this into a fold.)

Seems like a super standard peel, calling a 2nd bet is no big deal, facing 3 bets hero has the option to fold.

Raise seems optimistic/bad.