I've tried scabs... and had bad luck with them. They don't work well at all. My nephew was given a bunch of them and can't get them to work either I've heard that other brands may be somewhat better, but glue patches work. Or, for the 2 or 3 tubes a year I go through, just replace ($3 each).

I can't feel a "patch".

I did try a Park Boot in one of my tires as a long-term tire repair.
The full sized boot thumped.
I cut it in half and put it back in, and no thumping. However, after about 1000 miles, the boot wore through the tube and caused a flat.
I put electrical tape around the edges of the boot, and it shredded the boot, and somehow I had an unexplained hole that worked through the middle of the boot and halfway through the tube. It is a good winter tire, so I'm still considering repair alternatives and would like to reinstall.