Who pays for a new PTO shaft/gearbox when the topper hits something the landowner either didn't know about or 'forgot'?
I've come to the conclusion its not worth doing favours, it inevitably comes back and bites you in the proverbial. If you own land either buy your own kit to maintain it or pay the going rate from a bona fide contractor. Don't expect someone else to shoulder the risk their machinery goes bang while working on your land, but only pay them a pittance. Its effectively begging.