What do you use as a stop here marker?

I've used several methods over the past 15 years to get the proper location of 5th wheel, class c & now class a motorhomes. The people here give some good advice on different ways to accomplish this.

What I don't understand is why not utilize your hydraulic jacks to level the MH once you get it where you want it? Jack pads or 2X8's cut to the correct size would protect your driveway.

Thanks!