Attachment ideas:
--Zip ties.
--Wrap wire around PVC, through hardware cloth, repeat (sewing or weaving).
--Frame with light-weight wood (2x2 or even 1x1), then attach hardware cloth with staples or screws.
--Make a cattle panel hoop coop--something like this:
https://www.backyardchickens.com/articles/cattle-panel-hoop-coop.74636/
(I didn't read the instructions, just looked at the photo.)
Attach the hardware cloth to the wire panels with zip ties, sew/weave with wire, use J-clips or C-clips or hog rings or any similar little metal things for hooking wires together.
Weight reduction ideas:
--If your chicken tractor needs an enclosed "coop" section, use hardware cloth + tarp instead of wood. The hardware cloth provides predator protection, the tarp provides weather protection, and the whole thing is lighter than if you used plywood or similar.
--Depending on where you live, your tractor may not need a "coop" at all. For summer use, a "covered run" is enough, day and night, as long as it's predator proof. (For laying hens, add roosts and nestboxes.)
Chickens are often happy sleeping in trees--they can certainly sleep on roosts under a roof, during the summer.
Slope ideas:
--Make a slanted pen.
--Build a straight pen, and put it on the slope. The roof will have a different slope. Roosts need to be fairly level, so either run them across the slope, or attach them at different heights on the downhill vs. uphill ends of the pen. Hang waterer from a chain or rope, so gravity keeps it level. Build nests extra deep, and put in so much bedding that the hens can shape a level surface inside, no matter which way it slants.
--Not a tractor, but build a coop on a two-wheeled trailer, and prop up the hitch end as needed to get a level floor inside.
