I have and will continue to use plugs for my tires, I have had one tire on a car that had seven plugs, but I was poor then.
Tire plugs are meant to be a short term fix, I currently have two in my rear I picked up a roofing staple in the middle of the tread. and have had ridden routinely around 100mph, no ill effects, no trauma.
Patches are a better fix, and can be permanent, if going this route make sure to rebalance as stated above.
as a final note I have plugged tires on My Vette, and driven well in excess of posted limits, I have also had a rapid loss of pressure at over 80mph, unrelated to any repair.
a plug will last, if done correctly. Just do your normal pre-ride check, on pressure and condition.
hope that helps,
later