getting to put motor home

I park mine on a gravel pad and don't put anything under the tires. Most of the winter the ground is frozen anyway.

need to put something that will not absorb water under the tires when you go to storage if its in wet area. supposedly will keep them from absorbing the moisture so see if ya can find something plastic or rubber to cover the boards or concrete. concrete will leach out its by products as it ages and that includes the cement blocks.

I would suggest putting rig on concrete stepping stones rather then wood. Treated wood would be better then standard. Remember to put under both tires of duals.
I would charge the batteries then disconnect them.