I see you live where it might freeze once in a while, as such, pavers usually don't work to well, they come up with the frost heave, happens to me every winter and I keep telling myself, this summer I am going to pour deep concrete strips. Then I'll cover those up with 2X12's as wood is the best surface to park on to preserve tires.
Now I'm parking on a well compacted gravel driveway on a 2 x 12 on one side and 3/4" marine plywood on the other to make the trailer level. We use it for an extra bedroom as we live in a one bedroom park model, and around Thanksgiving we fire up the fridge to store the extra turkey's in. We keep it plugged in and heated to 50 degrees.
I vote for the strips, if you change TT's, just pour a couple more.