That sounds like a good idea to make it easy so I'm thinking of maybe using duct taping it to the inside of the tyre but still using some puncture patches to make rubber wall 100% thus removing the 0.5% or so gap from where the tape is holding the joint together. The patches would be facing the tyre wall rather than in direct contact with the inner tube which will eventually be inflated. This small bump from the patches I would of thought wouldn't causes punctures as they are okay on repair punctures thus giving the repaired area a slight bump too. Say the functioning inner tube has a puncture repair patch already on it & it comes into contact with my makeshift liner in the exact same place as where the joint is where the patches holding it together this shouldn't be too bumpy to cause a puncture?