Scythes ... I bought one of these:
They are awesome. Light weight, cut like mad, you don't have to lean over and throw out your back. They give instructions on how to measure the person who will be using the scythe when you order it so that it is comfortable. When it arrives, you follow instructions and glue in the handles at angles comfortable for you.
Heartily recommended for jungle abatement out back. By the way, if it isn't actively raining but still wet from the rain, the scythe works better than ever. The grass can't slither out of the way as easily when it's wet. You just clean and dry off the blade when finished. It's not stainless.
Here's a video showing a 14-year-old girl using their scythe. I think she's the daughter of The Scythe Supply founder. Unfortunately, they used a few seconds of Bob Dylan in the background, and You Tube deleted the sound track. I sure wish I was as good with a scythe as she is!