I aced a blind par 4 on a short and beautiful Scottish course called Shiskine, on the island of Arran. (Very similar to Dunaverty, which is where I shot my 63, except that Shiskine has only 12 holes.) This was during my whirlwind tour of Scotland with three of my college buddies at the end of my year living in St. Andrews - it was a downhill, downwind hole, and all of my friends hit long irons into the green, and I took a driver and pushed it right of where I was aiming and kind of got underneath it a bit. It was our second time playing that hole that day, but we didn't really know where the green was; we were walking toward the green when someone in the group called over to us and said, "You, you in the blue shirt! You just made a hole in one!" Talk about a total fluke...and obviously I can't be 100% sure that someone didn't sneak over and put my ball in the hole, but the guys were quite far away from the green when they called over to us, and all of my mates had missed the green to the left, so it seemed to check out.We had a similar foggy situation at Bandon one year. The caddies would throw a towel down at the front of the tee and say "hit it over that". Rather than someone getting hit with a ball though someone made an ace on #2. They were in the group in front of mine so I only heard the reaction once they got to the green. Though now that I think about it, it may have been BS. My caddie told me there was an older couple (late 70s) out there last year and the wife knew it was the last time they'd be able to go to Bandon. Her husband had never had a hole in 1 so they arranged for someone to put the ball in the hole for him on one of the par 3s so he thought he got an ace at Bandon. They did, and then he made an actual ace on the back 9. That story may also be bullshit, but it's fun anyway.