Hey everyone!

Looking to get folks opinions about hiking carts. This would be a single wheel or multi-wheel cart, non-motorized that a person would pull with 1 or 2 hands, or somehow attach to a hip belt. If you google search you can find a variety of various designs out there. Most appear to be no wider than the average shoulder width of an adult male.

-Are there laws/rules preventing these carts on the trail(s) today?
-What's your thoughts if you see someone with one of these carts?
-Anyone with personal experience using a cart?

I ask this as i get older and my knees continue to get worse as well as the disc in my neck and back.

Looking forward to a good healthy discussion!