OK. In the slap bass book I bought, LHS was a big part in it, it seemed to be in every riff. When playing an open note then left hand slapping, it was no problem. But there were fretted notes followed by a left hand slap. How do you do this effectively? Is it just laying your hand down to stop the note from ringing out or is it an actual slap on the fretboard. It's hard to explain what I'm talking about, I hope I'm explaining it ok.