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You can get puncture resistant tyres, they're about 15mm thick so it takes a lot to puncture one. Add puncture proof tubes, and you could even look into self sealing slime that is applied to the inside of tube via the valve.
For your protector, you could maybe use talc (etc) to reduce friction between the liner and tube.
Finally, if you know there are thorns in the area, ride carefully. Avoid the area or walk the bike across it.
It's been years since I had a puncture that I couldn't still ride on.
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