That and others like it are fun to watch. Lots of folk have no idea just how maneuverable their bike really is.
I'm not near him, but I keep striving to improve. This year I will take mine to a ridelikeapro course. And maybe one of the advanced rider MSF courses as well. Never done to former, been a while since I've done the latter, and never with the Harley.
do a search and find some MSF sites that do the bike bonding courses. The experienced riders course (BRC 2 )has the U turn box same as the basic and you can get it down to 16 and 17 feet if your having a good day but the bike bonding is entering a decreasing circle and more similar to motor officer maneuvers.
When in Milwaukee for the 110th I sat and watched the officers go thru the course for about 2 hours, it was mesmerizing to watch. Something to achieve for as part of the total skill package !