Cummins12V98 wrote:
I have the "plus". Mine has 4 bolt heads on the bottom and the bottom looks like saw teeth where the plastic hits the ground.
Does yours look like that?
I think it does have the 4 bolts sticking down. And that's probably what was "skating" on the smooth concrete. I doubt my sawtooth bottom was contacting because the bolts were holding it up. I've repacked mine in the camper now, so I can't inspect it closely, but I don't remember any reason for the bolts. I wonder now if they are removable to allow more contact area for smooth surfaces? I wonder why they are there at all unless it is to provide a better "cleat" in regular ground?
I looked at the
Trailer-Aid website. Mine is an older model - the standard Trailer-Aid, not the "Plus" unit. I've had mine about 10 years, probably before the Plus unit was available. According to the description on the website the Trailer-Aid Plus is 1" taller than the older standard unit (and costs $10 more). So, what we have found out is consistent with their models. I have to add more 2-by material under my unit to get the same height as yours.