What FTDK said
Especially this bit.
I would never put an aircraft that I owned on a line for private hire. The risk of someone costing you a large amount of money is just too great. I would however allow a very few people to use the aircraft - those who I knew could be trusted to operate the aircraft as if it was their own and would operate it the way I want it operated.
When mine comes out of the hangar with new paint/interior/etc that is exactly what will be happening.