Hole in one probability can vary by a large factor depending on hole location and green contour. If that's all they consider, either they're heavily profitable or some tournaments could break even.
You still have lots of paperwork and taxes and general business overhead.
They didn't like how hard it was so someone had to fix my work. The only thing else I remember was the hole in one was for nice car and they had a witness that sat their all day, who could attest/validate if one occurred.