Physical threats work only as a last resort. Then you actually have to get violent, and it becomes a bloody awful mess, and then you've got to get the guy that gets paid the least to mop up the blood, and really, it's just not fun for anyone after that.
I wouldn't have left Cassidy with the deed to it if I didn't trust him to take good care of the place. I've got other places to live, don't you worry. Anyway, I've never felt truly right on dry land. Old habits, and all that.