Time for Tannus!
Ok so lets give these puncture free tyres from Tannus a try. I've never fitted one before and did nothing but follow the instructions and watched a few videos beforehand.
It all seemed to go ok if you ask me. Not technically difficult but does require a bit of strength to get the fit done.
Anyway, I hope someone finds this helpful. Any questions then ask away in the comments and I'll do my best to answer them for you.