Spot weld removal - The can opener technique

I have one of these spot weld cutter drill bit from harbor freight that mainly consists of cutting a circle around the spot weld then you grind what is left over. Over time i have aquired a decent technique, basically hold as flat as you can and get a very stable grip on your drill.

But it still takes a lot if time. Much faster technique i was able to use here was to cut around so that all is left is a strip of sheet metal, then pre drill each spot weld with a nice and sharp bit, then leverage with strong pliers. No kidding this whole side was done in 10 minutes. Feels good to relate a success story !