Thanks for all the comments on my fabulous deisgn. Based on these I may need to revisit the drawing board. However given the snowy weather reports I may change tack and start selling them as path clearance devices.
Bernie, I'm a big boy too (in height and girth only unfortunately) so I always find it difficult trying to get down to anywhere near lightweight. So I thought sod it, be comfy and take a camera I know I can't blame when the pictures are crap. As for carrying it , I'm trying everything at the mo...hmmmm I have another cunning idea. How about strapping a balloon to it and filling it with......you know what
See you all soon.
PS Is it just me or has anybody else not tried packing their rucksacks yet?