The boat is in water, right? And they keep it there, right?
After the tst I would pull he out and do a good inspection of everything.
Ask the owner for the boat records.
When it's out I would change the gear oil, clean and repaint the bottom, who know when you have it out again. Just a suggestion.
If they respect you, respect them. If they disrespect you, still respect them. Do not allow the action of others to decrease your good manner, because you represent yourself not others.
-2001 Maxum 2100 SR2 Sport -1997 Regal 258 Commodore (Sold)