I want to cut the grass (and weeds at the moment) on the batter (45-degree slope) alongside our pool. At my age (and back!), I don't want to use a brush cutter, and the four-stoke cutter we have blows smoke if we use that. Instructions for your small Ryobi battery mower say I shouldn't use it on more than 15-degrees. You can't buy two-stroke mowers any more, apparently. What to do... and please don't tell me to get someone in?