If you have the Bonnie or T100 front mudguard, add a mudflap. This will stop 95% of rear punctures. If you have the Thruxton short mudguard you'll have to live with punctures.
+1 on that.
Slime/gloop is limited to something close to a 5mm diameter hole or the equivalent CSA. I used it in France as a way to avoid carrying the tools on our early two up trips. The nail made a good dozen pin holes which it sealed. So far so good, but the tyre was slowly leaking air and the nail was still in there. The last hole was in the tube seam and made a flap which was too big to seal. The tube was then scrap, the stuff stops patches sticking. The deflation was over about 3 hours while the bike was parked and as it was in the middle of Bayeau (went to see William the ******ds tapestry), we were off and running in just over an hour after a visit to the worlds most Gallic scooter shop (with a Polish mechanic who'd got the whole beret/gittane/shrug thing down to a fine art, but worked like a small hurricane once he'd handed out the most fantastic coffee!).
If you ride in places where help is available but getting home might be better, use the slime. If you ride in places where help isn't on the end your mobile, learn to use those irons. A tube for each wheel and a patch kit make you independent for something like 10 flats, although for hot places off the map the locals use patches as currency and will constantly ask for them. I carry a bicycle repair kit and offer 'em those, something that will no doubt come back and bite me in the bum in the end, but I'm *****d if I'll give away mobility like that.
Foam in a can BTW is utterly useless. They explode in your panniers too if you park in the sun :eeek:
We can now start a thread about putting bathroom sealer on your spokes and ditching the tubes! I'll start. When Michelin sell it to BMW instead of stupidly expensive double rims I'll buy it. Until then I won't be betting my life on bathroom sealant even if certain US wheel shops do claim they've never had a failure (yet, based on no scientific testing)
opcorn2:
Andy