Your exactly correct and that is the primary purpose of the trailer. There is no safer way to check clearance then the cti trailer.I never really worried about what my “official” score is. I merely used it to check clearances, binding, etc. I am more interested in how it rides, handles and wheels. My old TJ never scored very well - 4” long arm with triangulated rear four link, Currie AntiRocks, etc. but did everything I wanted it to do offroad. My JK still needs a couple of tweaks but it’s getting there.