I'd say 99% of all tournaments that offer these prizes have "hole in one" insurance. Whether offering a new car, $10,000 cash, or whatever else. Works like any old insurance. You pay the company $1,500 or so flat fee to come out and make the offer, and if they lose they pay out the $20,000 prize. If no one gets a hole in one (99% of the time), they've gained $1,500 for nothing but a "dare." Pretty sweet business to be in, if you ask me.