Park-n-move is one of the absolute best buys you can make for the ST1300, if you have limited space in the garage and want to easily manuever the bike into a tight corner, or just turn it around to head it out when you want to ride. I agree about the low clearance - garage floor needs to be absolutely clean. (I just use my leaf blower once in a while to make sure the floor is clean.)
I cut a piece of 2 x 6 about 2 feet long - beveled the ends at about 60 degrees. When I get in the garage, I just put the board down, put the bike in gear and run the back wheel up onto the board. That makes it really easy to put the center stand on the platform and just step down on the center stand. I make sure the wheels are NOT LOCKED on the Park-N-Move, which makes it easy to put the bike on the platform.
Park-N-Move is really well built and designed - wheels are very high quality and heavy duty - easily supports the ST1300. Highly recommended!!