Not having auto-leveling, we use the Andersen drive-on levelers and really like them. We already have and use two-way radios when driving (we are full-timers and my wife follows in a car). We just put a big carpenter's level on the kitchen floor and level side-to-side with the trailer on the truck using the Andersen levelers and the radios. If it's just an overnight stop and we can level front-to-back by just raising the the front of the trailer a bit, I drop the front landing gear and lift the front until my wife tells me we're level front-to-back. If we're staying for a while, we just pull the truck out from under the trailer before doing the front-to-back leveling. The whole process takes us less than 10 minutes and is spot-on.
Rob