How do you stabilize your Class C when parked for camping?

pnichols wrote:

That's what you get with a small Class C on the E450's rear leaf spring and front/rear torsion bar chassis .... unfortunately right along with a stiff ride when going down the road.

Do different manufacturers use different suspensions ?
Because my 28' Winnebago is just the opposite.
Really good ride going down the road but rocks a little when sitting.
Or maybe it is mostly different perception by the owners.