Lug Nut Removal Help Needed

One can develop a lot of hate for locking lug nuts while working at a tire store. 1987 to 92 was my 4 year tour and soooo many customer were completely clueless, "I didn't know there were locking lugs on it so I surely dont know where to find the key".
A long 1/4 inch chisel with hammer and counterclockwise angle to the cut became my go to tools/solution.