First time I tried was about 2 weeks ago, cause it was easier to toss it off the balcony then walk all the way downstairs.   The 90 degree turn from the backyard to the sideyard is a challenge, since over the roof is not feasible — I could probably make the height, but dropping it into the 5 ft wide side walkway and not over the neighbor’s fence requires FantasyLeague Jeff Feagles-like skills.

The second try i went for accuracy, and laid it right on the walkway near the garbage pail.   This is a delicate maneuver, too hard and the bag will smash the wall and spill open, too soft and it will skid along the gravel and spill open.   EWWW!

Closer, but still unable to negotiate the corner.   A disc is whats really needed here, I wonder if I could strap the steaming bag of poo to a disc?