Hi Phil, we have all been there and it sucks as my last nail was a large roof type i was unable to save the tyre with a inner patch and had to buy a new tyre. Hard luck mate.
Nick
Bugga .......still, I hear you may be able to pick up one of those 50 dollar oil leaks on 20% off special at the moment (always the one liner I was hit with when out on the Tribsa or AJS )