Hi Jerry,
Hope you' re fine, about your Metzler tyre puncture, just have a look at the following link they display the possible solutions for fixing it
http://www.freebiker.net/FichesPratique ... vaison.htm .
For me the best one (in the meaning of the easiest one when it happens on the road) , the one I use with the Harley in France is the external repair with CO2 cartridge.
Now may be the most "corporate" one would be to repair the tyre after dismounting from the wheel by an internal fixing, but it's too difficult when being alone.
Hope it helps, even if the explanation of the link are in French, the illustration should be enough
Hope it helps.