[MarkD]

Sorry, I was thinking about the KQ hand when I wrote everything in my above posts. The math is the same in either case though - you just plug in percentages.

edit:
I would c/r this hand all day and only be afraid that my opponent might check behind. This was my thought before doing any math. Now that I have done the math I'd still CR as I would estimate I'm ahead much more than 2/3 times.

I just wanted to investigate the math behind the "60% rule" that grisga kept bringing up. The above formulas give a means of evaluating c/r'ing vs. c/c'ing in any river situation though so it wasn't a wasted effort on my part.