Depending how thorough you want to be, would depend on what you want to do. One way to check into an owner is to ask him/her for references (names and numbers or emails of some past and present drivers) I would ask for the past as well as the present so I can check how the money flow was, and still is. Does he do what he says he will do.
If you want to be more thorough than that do a credit check on the owner. I’m sure if someone has bad credit and doesn’t pay his or her bills, that person won’t pay you either.
Remember you are an Independent Contractor. An IC is a person running a small business. This means you are an owner of a company that provides a service for a fee. Do your homework and get the proper papers in order to run credit checks on potential clients (in your case the owners you may want to drive for)
There is nothing worse than driving 2000 miles for someone only to find out you aren’t going to get paid when you get done.
If an owner give you a hard time and or refuses then it may be best to walk away and find a good owner.