Flop is great for us, so I'm cbetting a high clip here. Our checking range should start with hands that don't gain a lot from protection and can't get 3 streets of value. Against a player like this, you don't need to be any more sophisticated than making this like A9-. Then you can obviously fill in the rest of the range with some of you worst hands and you can mostly check 55.

Against this villain (bad, loose, aggressive at least preflop) on a runout that was so awful for him, I'd mostly just call down with A-high and call it a day.

The spot's obviously a bit more complicated against competent opponents, but your xbs here should be low leverage regardless. If how you play your xbs in this spot has a large affect on your bottom line, then you're doing it at the wrong frequency and with the wrong hands.