A friend of mine makes the top one in the video for sale. Don’t know what he charges though
A round bale weighs about 650 kg.
That would be a light one, they can be up to a ton weight! Either way I wouldn't like to be trying to control a quad with that much weight behind it!
You can get quad trailer kits which have an axle, wheels, hitch & a few other bits which would be a start.
Hi
She doesn't need one. she has a good quad and wants to do the things herself. It would be getting split between her and a friend.
You do make a valid point thought but she won't do it and they asked me to make one they aren't willing to pay a £1000.
Regard