Levelers

So much easier to use than boards and they stand behind thier products. I had one crack and they sent a new one no charge.

Add some bubble levels to the rig and you will be level in about 1 minute compared to 10 with the Lego blocks.

Search feature on here should yield plenty of results/comments.
They work good for us, and I'm happy we have them. I know some other folks that have them as well and also like them. You still need to carry some boards, though, as they will smash into softer soils. I wish that Andersen would have made them twice as wide.

fairly costly, but I wish I had bought them years ago. Till I got them I had stacks of every thickness of board to get level. Too many times backing up, adding/subtracting wood! You wont regret buying them, life is too short to mess around getting level.

They work good. Make sure you have a spotter so you don't drive off the ends of them. On some rigs with close wheel spacing you may have to trim one so it will fit between the tires. This wasn't an issue for me. If I have a small amount to level I just drive up on lego blocks and don't mess with the levelers. I have RotoChoks so chocking the tires is not an issue either way.