If you have a travel trailer, Utility Blocks also have a circular recess in the top, designed to be used with the tongue jack. This helps hold the wheel or jack foot in place while you’re parked, helping to keep things more stable. ...
Here’s a link to our post on using theLevelMatePRO to level an RV without jacks, and here’s our YouTube video showing you exactly how to level a motorhome without jacks: How Do I Level a Travel Trailer Using the LevelMate Pro?