[ilya]

All-in on the turn! He only needs to call you like 2% of the time to make it higher EV than checking and betting 20 on the river. And even if he only calls you 0.5% of the time, and your EV is thus lower, it's still a better play than betting 20 IMO. Considering the boredom & misclick factors, you just can't go wrong with an all-in! I mean, come on, don't you think he's gonna call you at least once in 200 times?

I'm mildly serious, I guess...another option would be to make some reasonable pot-size bets as people suggest.