BALs are a great addition to stabilizing your RV. Insert the X Chocks between the tires after all of the leveling, blocks, and other devices are installed.
As for leaving them in place for an entire summer, you should have no issues with that.
Use tire covers if you can. If you have the wide stance chassis, get individual wheels covers and the Extended X Chocks. Install the Extended X Chocks after you install the individual wheel covers.
If you have a standard chassis, you can use the regular X Chocks and the double tire cover. Install the regular X Chocks then install the double wheel covers.
Jeff & Laurie -- Full timing in Rockport, Texas
Auggie (our beer-loving English Cocker Spaniel)
Angus (55 pounds of attitude in a 5 pound chihuahua body)
Our home base -- 2018 Grand Design Solitude 375RES -- The "Uno Mas!"
The mobile office -- 2016 Crossroads Hill Country HCT26RB -- The "Poquito Mas!"
Gone but not forgotten: 2015 Heartland Landmark 365 Key West (lost to Hurricane Harvey)