[Brian in Tucson]

Rhino ramps don't get my Boxster even near high enough to get under to do work. I put the rear on the Rhinos then us an air operated bottle jack to raise the car up enough to get tall jack stands under it. If you're worried about your garage floor, buy a couple of sheets of sanded shop or sanded OSB to take the jacks, stands, and Rhinos.

I never have a problem getting up on the Rhinos, but sometimes they shoot out when I'm driving off them.