An experimental cart, wheelbarrow wheel in the rear. I used 1/2" pipe for the top and it flexed way too much from the gas springs, the front telescoping latches were screwy too.

This worked nice but another version was necessary to work out some of the bugs.

Here on ver 2.0 I used 3/4" x 1 1/2" rectangular tube for the top and sheet metal instead of plywood under the pad. I really like this one.

The telescoping tubes on the front were too tight, not enough clearance. There's gotta be a better way, someday I'd like to come back to this version and come up with a version 3.0. The large fat tire in the rear really rolls over the rough terrain nicely