RE: Placing a boat in a charter fleet
At one time, I owned about the only trawler for charter on the East Coast. The folks who took her out were extremely easy on her. She was out for about 10 weeks a year.
I think the secret to success is a couple things.
First, a picture book of instructions detailing every procedure, tank location, gauge, setting, switch, drawer, key or handle.
And second a well maintained boat.
If you don't let the folks who run her get frustrated or annoyed because they don't know how to do something, or because something doesn't work, they'll be good to her...folks who charter trawlers are usually pretty laid back.