Apparently the average motorist will get a flat tyre less than once every 10 years so I heard last week.
I have had 2, both nails in the tyre and neither needed foam, just pumped them up and had them repaired, i even drove on 8psi for ages without realising it at the rear as the tyres are so strong on the sidewalls.
bes thing to do roy is carry a pump around with you and next time pump the tyre up first and chances are that it will either stay up or be a very slow puncture and will be ok to drive to get it repaired.
On the 182, the only time i wouldn't drive on it is if i had a blowout and then you have more things to worry about.
DOn't see a need for the foam really.