I kinda disagree with your thinking Bean but that might well be me being a fish. I am not checking back this turn with these positions with a weak K opting to chk those back on the river unimproved. On this river tho i would bet/fold all my weaker kings bet/call AK and bet/jam boats, i may choose to bet this range bigger and could possibly polarize this range with my bluffs if i was to try and make a villain fold a K, which i dont think anyone at 5nls can. So betting half to 3/4 with my entire range is prolly more balanced. Therefore as a bluff i can target the weaker part of villains range. The only issue i can see with this is how we weight it, we dont know with any degree of certainty villain has many bluff catchers on this river as my turn bet may have folded them out, which would also make betting weak kings bad. I dont think this is true btw.