Getting 5th wheeler next week

Look up. Be aware of what's around you as well as what's up wherever you drive. Manually measure the height of your FW, write or type it on a piece of paper and tape it to the inside upper left of your front windshield. You may know the height today, but can easily forget it when you need it the most.

Swing - be aware of the swing of the end of your FW when turning. You'll avoid a lot of damage this way.