Sorry Njee, that was a little joke with Dougal, I saw your suggestion and replied to it, and am going to try tub glue, maybe even the conti stuff which I hear is pretty good
jamesP, it wouldn't even need to be 100% airtight. The big hassle with ghetto is making a seal between the tyre and the rim, as the air pisses out the side. If you glued the strip of inner tube in, even only 90% airtight, it would stop the air pissing out. Once you'd then put some sealant in I reckon you'd end up with an airtight system.
This means you could change/fit tyres more easily, and you wouldn't 'burp' the tyre as when the bead lifts there's still the strip of inner tube there.
I think this plan hinges on how easily you could glue the strip in. Once it took you longer than half an hour I'd just go back to normal ghetto, or learning to like the selection of UST tyres on the market..