Well, I used to swear by the BAL, and still say it is great; however, this past weekend I tried the Andersen leveler, and balanced side-to-side in seconds. Back up to where you want to camp, place the ramp in front of a tire, pull forward till level side-to-side, place vehicle in park AND apply parking break (many vehicles will roll and inch or two if only in park). Then place the chock that comes with it at the back of the tire; and you are done.
And after three days of camping with wind gusts up to 55 mph from the side and back, the trailer did not loose level. So, it does work.
Trailer: Lifted 228BH, heavy duty springs and Yokohama tires
TV: 2016 GMC Sierra Z71 4x4 CC, SLT
Spare TV: Two Alaskan Malamutes
Living somewhere in ID; previously lived in Moab UT; previous to that, don't ask!