They do require finesse and a little arm workout. I use the air as support as much as possible. Nozzle direction is critical.I don't know if I'm going to like this gutter cleaning attachment for the leaf blower. It's heavy and awkward and in addition to fighting that, it puts out quite a bit of pressure when the blower is running, so I have to fight that as well. Might end up going back to cleaning them by hand.