1st / 3rd basemen straddling the bag in foul territory

[U_of_I_Blue]

This has been discussed before. I believe every time it comes up, the consensus is ignore it till a coach complains, then enforce it strictly for both teams. The peanalty is not a balk though. It's you tell them to get into fair territory and not allow a pitch until they are.

Summary:
Don't enforce unless there's complaining
If so, enforce strictly
Don't allow a pitch, make them adjust first.

-Josh