Who do u get this off the back of the boat? I have tried everything and can't get this off, I've been scrubbing for 20 mins,

anyone?

simple green.

tar off.

? hull cleaner maybe?

I posted this in another place as well and someone told me to use that magic eraser. Thats the best thing ever made, don't know how it works but it took everything off with ease!!

I've use a small amount of paint thinner and it comes right off. You don't need much.