Trailer Off Tires for Winter Storage???

Don't make this more complicated than it is.
Keep it simple and easy and you will find yourself camping a lot more.

Most don't. I don't. And you have to be careful. If you have Dexter torsion axles you can't jack them up or put blocks under the axle itself otherwise you'll damage it.

Many years ago I used to see people put 'em on blocks. The thinking was that it somehow protected the tires. It didn't make any difference.

I park on a gravel pad and have 2" boards under the tires so it doesn't sink in the spring when the ground is wet.

Most don't. I don't. And you have to be careful. If you have Dexter torsion axles you can't jack them up or put blocks under the axle itself otherwise you'll damage it.

I park on a gravel pad and have 2 in boards under the tires so it doesn't sink in the spring when the ground is wet.

X2.

No! Park it, winterize, plug in close it up.