If thorns are the problem, tyre liners are the solution.
The commercial version is Mr Tuffy.
You can improvise with old, thinner tyres cut to length. Use a diagonal cut to give some adjustment for the exact length.
You can get an industrial heat-sealed tape, the kind used to hold newspapers or pallets of goods together. This is far tougher than ductape and may be available at a factory. You just need used bits that would get thrown out.