My answer would be a new Tire.
My question was not directed at whether to replace the tire or not. I am aware of the all back and forth discussions between the manufacturers of tires, the consumers and the manufacturers of tire repair kits.
It would be like asking the oil corporations for money to develop electric powered cars.
I am a very anal individual and there were countless times when I had replaced tires with just a few hundred miles on them because of a single nail. Trust me, been there, done that.
Plugs work if one pays attention and knows what is doing.