The height adjustment on the surface cleaner makes all the difference with the resistance to push it. If you set them where the skirt just barely touches the ground you can get good recovery and little additional effort required. If they are off the ground you can wash without recovery and use them like a regular surface cleaner. If they are tight to the ground they will recover a little better but the resistance can make them difficult to push. Whats the key? Adjust the height properly and you will be happy with the system.