Leveling

I was just wondering if anybody has any better Solutions for leveling a class c? I am on a very unlevel area where I am parked and I live full-time in my R. V. Im using those plastic levelers and it is really difficult to use because 3 of 4 sides are different heights. I don't know if anybody has any other suggestions that might help. I want to find a way to make it easier to do and a little more secure than what I have now.