We got a Covermate II with our Maxxus.
It didn't work out at all. The cover is too heavy, and one of the arms on the lifter bent. As a result, I had to pull so hard on the cover to get it to close, that the seam ripped on the cover.
The dealer is replacing it with a new cover and a Cover Valet lifter... with shock assist.
This lifter doesn't allow the cover to fold all the way down, but you only need 6" of clearance. Dealer offered a fold away lifter with shock assist, but it needed 36" of clearance (Cover Caddy, I think.)