IAMICHABOD wrote:
I tried the Lego type blocks but found that they broke to easy and were a pain to setup when you don't get it right the first time and had to drive off,re-stack, and make them higher,to labor intensive.
I solved the cracking issue by mounting a layer of Lynx to a length of 3/4" plywood that hinges in half for easy storage. The Lynx blocks won't crack regardless of the terrain they're sitting on, won't shift out of position, and provide a locked base on which additional Lynx can be set. I've used this system for years on a variety of trailers, works like a charm. After a few uses you get to know how much lift you need on the low side and I've rarely had to pull off the stack to change the height.

A series of pics illustrating how I built this Lynx / Wood leveling system starts here - click on the "i" at the top right of any pic for a text description.
Lynx / Wood Leveling System