[Raxxmataxx]

I don't think it would be very hard to just figure this out with twodimes and a notepad, just time consuming.

Just assume that we're getting every chip in on 5th no matter the cards and that the opponent never folds. Then calculate the EV of some sample cases and average it out according to frequency of hole cards.

If that turns out to be positive I think it's pretty safe to play on.

Looking quickly at some 5th street scenarios it doesn't seem entirely implausible that it may work out to me. It's pretty hard for the other guy to have a hand strong enough that it would be right to fold with open cards on that street.

Since checkraising and betting fifth largely eliminates the reverse implied odds that is the reason you usually checkfold on 5th I think playing on is a lot more plausible than it might look on it's face.

If you'll estimate your opponents hole card range I can make some rough calculations.

Thinking about it, it's pretty likely that the other guy severly underestimates our strength for high here.