call turn and fold low card on riv but call high card

lots of times the fishy villain will be betting 22-77 and will shut down on riv whenever a broadway hits

if he fires riv when a broadway hits I'd tend to call since usually the fish don't make thin value-bets and he either has a big pawket pair, quadzillas, or a stupid semi-bluff where he was drawing dead in the first place like JT

folding is fine too, but without reads I tend to be curious