Jack it up, you've got to get it up anyway to cycle the gear
and check the tires properly.

I don't think you can jack it up anywhere near that much though. Mine
is up on jacks right now with the wheels off. I still have to slither
on my belly to get under the plane. It still takes long arms to reach
up into the nose well to measure the springs during the retraction. The
Mooney just sits very, very close to the ground.

-Robert