Two sets of tire liners?
 

There are a lot of goathead thorns in my area. Somewhat frequently, they punch through my Specialized Armadillo tires plus the Spinskins Race liners (http://www.warwickmills.com/PDFs/Spi...s-Brochure.PDF) inside the tires. The tires are at 120PSI. Mr. Tuffys are even less effective against goatheads.

I have not heard back from the Spinskins company yet on the following questions, but I was wondering if anyone has tried these ideas.

1. Would there be any potential problems with using two Spinskins Race tire liners in each tire?

2. How about using a Spinskins Race tire liner and a polyurethane liner in the same tire?

Thanks

How about switching to notubes, tubeless? If I was forced to ride Armadillos and lines, that would be my preference.