I have a set (wooden, homemade) that I carry, cannot recall the last time I used them.
FYI, a sheet of 3/4" treated plywood will make 6 16" square tripled pads.
Drill holes in the corners and use an awning rod to move em around.
Jim and Carol, plus furrballs Riley, Nikko, and Kobi
2017 Entegra Aspire, 2008 Monaco Knight, 2000 Fleetwood Pace Arrow