Peter MacPherson wrote:

I've never heard of a company that wouldn't allow you to fly yourself.
That would drive me nuts.....being a pilot, having a plane and not being
able to fly myself and have to go the airline route.

It may be an insurance and/or liability issue. I used to work for a
water research department. We were several SCUBA divers, some of us very
experienced, but we were not allowed to do the underwater part
ourselves, they rather hired professionals. Drove us nuts, too, but it
was an insurance issue.

Stefan