Please forgive me for stating the obvious: the slope is too wide for a side-mounted rig to mow; the terrain is too rough for a side-mounted rig to properly mow -- but you would accept, I'm sure, skinned places and straggly patches, if you could safely mow it from the bank... I think you've given up on that idea.
No worries, It's why I asked the question. I agree it's a wide area. I'm not looking for a clear cut, just to keep some of the wild under some control. I know mother nature can't be controlled. I could wipe it all out with pesticide, but it's a balance that is needed, without wiping everything out. I do cut trails across the top. I guess I'm after some water access (yes, I could weed whack some spots) but don't have the time. We spend the week being city slickers and the weekends being citiots
Regarding the idea of backing down with a brush-/bush-hog and back up: that would be a very difficult job. If all your slopes are the same as in the pics, you could do some of it, but some parts are so steep that you'd go in. (Or perhaps over, if you misjudged some of those "humps"!) A 5-acre lake? Twisting around in the seat to judge distance and location, while maintaining full control, and never making a mistake?
Don't think I would try this. I smell a tractor in the water
I can see only three options for this challenge: a) live with it, it's Nature; b) get some animals to periodically graze it; and c) plant it in low-profile ground cover.
Kind of liking the animal solution. It's something I have to look into more.
Don't you folk have resources like our County Extension Agent, who advise us on all kinds of matters from what to plant; when and with what to fertilize; to what animals to raise and what to feed them; and everything in between? Surely you have someone who can recommend some plants that would be low-maintenance and thrive in your zone, eh?