Watching the video, a few suggestions come to mind:
Lower the center of gravity by lowering the bucket, use the seatbelt, and please, HEAD AND HEARING PROTECTION! I have a hardhat/facemask/ear cups from Stihl that I use anytime I'm dealing with a cutter or in the woods.
Good luck!
Thanks Arcane. Good idea on the bucket. Not sure why she had it up that high in the first place. We do both wear hearing protection. We also ride motorcycles and have custom molded ear plugs. As for her head... well, it is harder than yours or mine. Trust me on that one!