Hi, Can I put a different suggestion into your pot....Sheep!
I have four acres of grazing ground which was waist high, and thick with nettles docks, thistles etc. To put it succinctly, to compliment my two horses, I have bought four ewes and with their annual offspring it has been easily cleared. The paddocks look like well maintained lawns now. The once pretty sparse grass is thick varied and lush and is enough, with careful management, to sustain all the animals throughout the year.
Yes the sheep get supplementary feeds during winter, need worming, vax etc, and the horses are mostly brought in at night all year round. But we get free lamb for the freezer for the whole family, our friends get lamb too (their ££ contribution covers costs)
In addition to using the sheep to clear the land and improve the grass I have over the years done some judicious spot spraying and hand dug ragwort!
Had I bought a mover/ flailer for my quad it would have cost me masses of money, it would have only been used a couple of times a year....and not really got rid of the weeds. It would have then sat in a shed depreciating for the rest of the time and would have needed expensive maintenance!!! ....and it would not have given me the pleasure and satisfaction that the ewes and their lambs have!!! Mowers just aren't cuddly!!
Ok on the downside, you need to be patient..... it takes time for the animals to do their job....
But for me there is no comparison!
Emma T