[Tryptamean]

Rather not iso-raise without showdown value, but if UTG is not the showdown -bound type, its probably ok.

Either way, flop peel is totally standard to see the turn card/action before making a showdown decision.

The ace does not complete many draws, but its not a good sign that he;s still bettng. He could have had the nut flush draw or just a random ace high isnt out of the question. Now that UTG folds, you can definitely see the river card.

3c is obv a good card as both straight and flush draws have missed. I would go ahead and payoff. It probably thin, but I think it will show a profit in the long run.

If had overlimped preflop, I'd probably still take the same line if the action is the same.