Not losing sleep over this spot nor is it paramount to figure it out since it's such a weird and rare spot. But I was just curious what others use as a bet size to maximize value against a fun player. Player is a typical fun player. Playing about 60% of hands and not raising preflop many of them. Villain will get to river with a very wide range. A lot of which cannot call any bet. But the hands he could call with are Kx, 5x, Flush, and could still have 55 or KK since he is a more fun passive player. Have an SPR of 2 so all options are there for sizing.

So really my question is what you guys perceive the thresholds to be for these opponents? As far as hands they call with and to what sizing.