Those "Hoppy Levels" are really good. The curve and the markings make them different for lengthwise and sideways leveling.
Let me shift gears:
Make Checklists, make Tags.
You want to be sure you've lowered the Antenna, disconnected Water, Power and Sewer, retracted any jacks, etc.
A "Crank Me Back Down" tag is especially useful for the Antenna.
A Fuel Stop checklist is good too - Any LPG appliance needs to be turned OFF. The LPG hose jockey might turn the tank valve off. Not safe with Fridge ON, because the Fridge will spark its igniter trying to get going again. It's not just the Flame you want to avoid, it's the Spark, too.
Checklists are good even after it all becomes second nature, since you could be distracted. I find that More Help = More Mistakes...