[Praxising]

For a check-raise to work, you have to get someone to bet when you check. You are showing a pair. I'm no high stakes player, but do you think it's likely either of these would bet if you checked? And if they would, say, thinking you were working the lo and didn't like your pair, if you raised wouldn't it pretty much give your hand away?

I rthink C/R works better on later streets where they have a lot of money invested and might call just because of the odds or convince themselves you are bluffing.