I think they all have very small footprint and they sink into asphalt very fast. My Tbird does. So I carry a "Cycle Foot" in my tank bag and use it all the time. It is a little 3x5" piece of bright orange plastic shaped like a little foot - complete with toes! The advantage over anything metal is that metel gets HOT when it is in the sun and can burn the H*** out of you if you don't watch out. I used to carry a big 4" round washer "til one sunny day I picked it up with my gloved hand, casually put it in my back jeans pocket and rode off! By the time I got stopped and got the thing out of my pocket I had a blistered bun!! Also, the bright color makes it far less likely that you'll ride off and leave it, as I have countless times with "home grown" metal side stand supports. (a crushed beer or soda pop can makes a great support in a pinch!
Cycle foot is available at many dealers, rallys, races, on the internet, etc. from many vendors. Cost me about $5 for three of them as I recall.
Monte
PS: bet you are DYING to get that bike under you!!!!!!!