| The thumb up and down on one string is used for a few things, and picking like you want is possible to some degree. Personally, I have to dig in with my right index nail. I can't get the same force (down or up) with my thumb, but maybe I just need to put in more time. You can definitely just crank the amp if its light, but that percussive sound you want is, in my opinion, going to be tough to do with just your thumb. |