OK sincrake the pote I’m on the topic of bad plays in Stud Hi-Lo, here is another.

One player has four low cards showing, another player has high cards showing. One player bets the other raises. Now, everyone else in the pot folds and the bettor calls.

The two players chop the pot. The raise gained no extra profit! That is a stupid play. Even if you have a monster hand, if it is obvious your opponent is going the other way, just call and get all the extra callers to donate to your hand.