My round was similar. I had a 14 handicap back then, but was sinking long putts all day. All of the Par 5's were reachable on the course I played. And I hit it longer 10 years ago than I do now. So I was reaching all of the Par 5's. I was 3 under through the first 5 holes. And just pretty much played par and bogey golf the rest of the day, without any major blow ups. My playing partners and I usually give each other a hard time on the course. But for some reason they didn't have much to say that day...LOL. I think it's because I took all of the skins and greenies.78...
My handicap is 12.7 so a score of 78 is almost statistically impossible. However that day something came together, I couldn't miss a shot. Every tee shot landed in fairway, I was hitting 15 ft putts without a problem. My friends stared at me in complete bewilderment, as if the longer they stared they would be closer to figuring out how I was doing it. It was an amazing experience, especially to do it with guys I golf 15 rounds a year with