I ground looped the Chief once. Not a fun situation to not feel like
you are in control. I had touched down and at about 5 mph I hit the
left rudder to turn off the runway. The plane went left, then too far
left (which is normal for any taildragger). When I hit the right rudder
to stop the turn it went to the floor and the plane kept going left. I
got about 270 degrees of a turn before I got my feet up on the heel
brake to tap the right brake. It was kind of sur-real going around in
circles slowly. Luckily the wheel never really left the ground and the
wing didn't touch. It turned out the locking pin in the tail had worn
out so the tailwheel didn't engage when aligned with the rudder. Until
I slowed to 5 mph I was successfully steering with the rudder (w/o
tailwheel).

-Robert