I carry an 18" bubble level. When I hit the site I check side/side and add blocks as needed. Then unhitch, move the TV and level front/back with the tongue Jack and finally stabilize with the stab jacks.
Enjoy and w close to JOF!
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks