If they can't cover the trip, maybe the aircraft owner will wonder why and start asking questions. I really wonder if the owners are aware of how pathetically paid and experienced their crews are? I wouldn't be suprised if the owner is paying $120k+ per year for salaries, and only $60k is being spent.
Then again, they'll just pull somebody off another airplane, throw them in the right seat, and go without any training. It wouldn't be out of character.