[jay_shark]

You need to win ~ 34% of the time to show a profit .

If we're behind , then certainly we don't have the right odds to continue . So we have to assign a probability for us presently having the best hand .

Say x % of the time , we actually have the best hand and win ~ 88% (2x rule for suckouts) . The rest of the time we win about 25% of the time (reasonable guess) . For calling to be profitable , we need to evaluate the value of x .

So we wish to solve:

x*0.88 + (1-x)*0.25 >=0.34
x>=14.2857%

You can probably answer this better than us .
Do you think you have the best hand ott more than ~ 14% of the time ?