As we hate to see anyone leave and as you have a Sliverwing.If you have a back box what about carrying a small car scissor jack and fixing up some kind of thing so you could jack the bike up if it's on it's side?
You obviously have no problem with the bike when it's vertical
And I've just had an idea.What about some kind of inflation bag?You can get those little camping foot pumps,
http://cgi.ebay.co.uk/BESTWAY-AIR-S...-NEW-2010-/220660335298?pt=LH_DefaultDomain_3
You obviously have no problem with the bike when it's vertical

And I've just had an idea.What about some kind of inflation bag?You can get those little camping foot pumps,
http://cgi.ebay.co.uk/BESTWAY-AIR-S...-NEW-2010-/220660335298?pt=LH_DefaultDomain_3