Mowers descent. as stated by others it doesn't like uneven surfaces (like going from sod to sewn grass. Doesn't like long grass takes a bit to get it mowed but does nicely on the hill just swing it side to side and work your way down the hill in an area then pull it up and start a new section, works great for this honestly in my application. I really see not much difference between the bar blade and the stock swiveling 3 blades set up. Grass tends to blow onto you due to the hover design and it tends to get trapped on top of the hove intakes which doesn't seem to hurt performance but when I see it gets to a thick level I tend to clean off.
