When at it with this guy yesterday on a Ryobi 4" grinder
Works alot better than the die grinder but still slow going. If you hold it in one place too long you could probably go right through the hull. I finished about 1/3 of the job in an hour. Atleast with the grinder, I don't have to wait for the compressor to pump up.
Now I have my own personal beach in the cabin. No need to waste the fuel going to the beach.
