Originally Posted by Gary RVRoamer
If unsure, why not just lay pads for the wheels and the front jacks (landing gear)? Either poured concrete or sets of 4x6x16" solid concrete block bedded in sand? Those will support the RV nicely, yet not large (or expensive). And if you use the concrete blocks rather than poured, easy to remove or re-size later.
Wheel pads would be about 2'x8' on each side. Landing gear pads could be as little a 2'x2'. Bigger pads are easier to hit if you take the trailer in & out often, but if its mostly just parked there they can be small.
I have to say that I agree with everything Gary said (I was going to suggest that myself but he beat me. I would use the concrete solids instead of patio pavers because they are thinker, If I was going to put down a base I would use crushed concrete and pack it well.
This makes it all temporary and easy to remove if you want and it is pretty cheap.