As for suing, keep in kind that someone losing a small claims decision is no guarantee that any money will ever be paid. There are deadbeats with multiple judgements against them.
They should be under threat of arrest but alas, the courts have their filing fees and don't give a **** about your judgement. I won a $4300.00 judgement from a deadbeat tenant who then moved out of State and I have not and will not see a penny.