I've been following this thread for some while now and it interests me too, although I don't want to comment nor propose anything myself because I find that I'm too far off with my weight of 87kg versus the weight of the 65kg weighing thread initiator.
It think it would be nice if we could get the reaction of a light weight US owner, too see what he has to say about it.
I consider the US a little bit as the (ultra) light wind board for the middle to heavy weight rider, i.e. 80+ kg, but I could be wrong. Please feel free to comment ...
IS87 / IS101 / IS122 / US147