Jack up one side of 30' Travel Trailer?

[Super_Coo]

Hi Guys,

Is there a safe way to jack up one side of a 30' travel trailer? It's a 2006 Innsbruck 30tbr if that makes a difference.
The trailer is on a bed of gravel and I'm not level side to side without having to lift up a little on the stabalizing jacks
and that causes some side to side movement. I made my own set of wheel chocks with a threaded rod and 4x4 so that
helped the front to back quite a bit.

Basically I want to jack up one side of the frame then jack up the axels to put a 2x10" under the wheels.

If someone could suggest the type and ratings of jacks I would need that would be great.
And if it is possible would it be better to have the slides in the trailer? It's the slide side I need to lift up.

Thanks in advance.