Phil,
Probably could have eliminated half the posts had you mentioned what your intent was. Since it is a trucking site, ones first thought would likely be that is was going to be used for a truck.
We have one but have only used it on a truck maybe half a dozen times at best. Mostly use it for farm equipment and horse trailers. Real handy for either one of those.
We have the same or simlar one to Turtle's.