I tried the poll, twice, it says "you chose too many options at once" or something like that, and gives you a "back" link, but then still doesn't work.

I don't know why we don't see as many 1 up Vipers as Blades down here in FL. The Blade has a couple years head start so there are more of them out there, and most of us who bought them were 1 up sailors (no regular, reliable crew) who always intended on racing them 1 up, maybe 2 up if we could find good crew and good wind.

I don't think there is any difference in racing the two of them 1 up, you can rig them exactly the same or any way you like.