i tried green slime in my tires far a while. didn't do much. injecting black pepper into the valve stem, with the shradder valve out, works much better. like plugging a radiator. green slime tire plugs, leak air out of the center of the plug. least it did the last time i tried it. i try to find the orange tire plugs. the colour is like orange copper permatex. they will stop a leak. getting harder to find. if you do find some, stock up. last many years, out of plugging the tire, have one plug yet to fail that i used in a tire. under dire consequences, i have been known to use a self taping screw, with orange copper permatex. it works. some of the less open minded ones have protested. but it works. you need less tools, just make sure the screw you set is coated with orange copper. this method does depend on the size or the hole.
the boss, one time, had a 3/8 metal, spike?, as in a bolt, sticking out of a side wall. drove that van for many years, without air leaks. musta been 3, maybe 4 inches on the outside of the sidewall. i still cant figure out why that didnt leak. i never had to put air in that tire in over 4 yrs. had that metal been pulled out, no too much way to fix a side wall.