Posted for "Alan K. Adamson" <aadamson@highrf.com>:

 That seal is inflatable, right, so it requires plumbing from the air pump to
 the seal itself.  If you put it on the canopy, there is no way to plumb it.
 The little fitting on the seal would have no place to go, and you'd have to
 include enough plumbing to allow the canopy to be raised/lowered.  While it
 could be engineered, I'm not sure it's worth the hassles.
 
 Alan