There are lots of ways to level your RV and we see people who prefer one way over another. Some would rather use wood boards and others like plastic blocks. Still others carry both and decide which they will use based on the type of ground they are parking on and how much leveling needs to be done.
Wood is typically better in sand and dirt because you can use longer pieces to span the area, whereas plastic blocks tend to sink in to soft aggregate like that. Wood can age, rot, and split, however, so must be replaced occasionally. Plastic blocks are better when the ground is wet because wood has a tendancy to slip in that situation. Plastic blocks are more expensive and you have to be sure to check their weight limit. They can crack and break if you overdo the weight limits.
There is a new product on the market called the Anderson Leveler. It seems to be easy and addresses most of the concerns when leveling with wood or plastic blocks. It comes in two fitted pieces. The first is curved and sized from one inch to 4 inches high. You will be driving up on this piece until the RV is level. Then place the second piece behind it as a chock. The video below shows how this is done.
Regardless of what you decide to use in leveling your RV, it’s important to do it. Some RV refrigerators will operate better in a level environment and you’ll be much more comfortable if you’re not listing to one side in your chair at the dinner table.