I carry two sets of the blocks Lloyd suggested and 4 - 4x4s about 12" long for just that purpose. Just last weekend to get the truck out of the road i had to back past the end of the pad. The ground dropped off so much the jacks would not reach the ground without the blocks. I have the scissors type jacks but the same would apply to the other type.
2005 Cruiser 29CK
2008 GMC 2500hd 4x4
Crew cab Long bed 6.0 gas
4.10 gear ratio
Before we installed the Ultra Fab Stabilizers I would place 6"+ of block under the landing gear and stabilizers in hopes of achieving more stability. But then I had another camper stop by and warn me that his RV slipped from blocks and that shock caused severely damage to his landing gear.
How could that happen?
We have been hit by wind on I-90 and push the RV sideways 3 feet.
At our RV dealership they have had wind slide RV's across their lawn.
We have overly socialized Buffalo and Elk in Yellowstone that owned our site before we arrived; one year we installed a section of buck-rail fence to redirect those critters.
Wow those are two nice trophies. Can I get a license to hunt there? They make up a years worth of protein for the cost of a license and two rounds!
The park rangers frown on shooting of those critters although THEY get to shoot Grizzly Bears with rubber bullets. Those bears need to be hazed away from the public areas but sometimes they high-tail it through the employee camp on their way to safer territory. That wooden stake in the Grizzly photo is just 30' behind our RV. It's not a six legged bear but a sow and cub. I saw her trotting off as I stepped out of the RV to walk the dog. A few seconds earlier might have been very bad for the dog and myself.