I have had it both ways, and I prefer to use the cart. When I am using it, I always have it tilted back, and am able to use all of the solution up easily without having to hold it under my arm as I am spraying. When you first begin using it on jobs you will find though that it is a little awkward. But it is just like riding a bike. After you get used to how it handles, you will save LOTS of time. Just remember that it is easier to wheel on 2 wheels than on all 4.