Moving a shed.

What kind of trailer do you have?

I keep any 4x4 stock I find and I have quite a collection.

I've stacked them up for things that are wider than my trailer or the wheel arches in my friends, larger trailer.

I'd also maybe try Dragging it on skids. Or you could buy some pole stock (2-4 poles) and feed them from the front, recycling from the rear to move it really old school- pyramid builder style.