Had a P0302 (misfire on Cylinder #2) code on my son's car - 2001 Mazda Protege w/ dual coils, each one firing two cylinders. I overthought it, and figured that it couldn't be the coil because if it was, it would cause a misfire on both #2 & #3.
Swapped plug positions, but the misfire did not follow the #2 plug to #3.
Static resistance checks did not reveal a problem with the coil.
Did change out the coil, and that was it. (I guess the problem was with the insulation breaking down rather than the coil going open, or the Ohmeter would have caught it. I wish I had a Megger for such testing.)
Anyway, I don't like the idea of deliberately causing a misfire because fuel gets dumped in and exhausted raw, putting a lot of wear on the cat.