The hole was over a lake, so no one saw it go in. It appeared to be a good shot so I expected it to be fairly close to the pin. As we approached the green, my ball was not visible on the green. This area of the green is very narrow & I have often seen balls go over & roll into the hazard on the other side. I was not a happy camper as I walked up onto the green. I was grumbling about my misfortune as I walked by the pin & I looked into the hole "just in case" it had gone in. Sure enough I was pleasantly surprised. After the rest of the group had putted out, I was pleasantly surprised again as my hole in one was worth 9 skins. What a great day!!!!!!!!!!!