Slap and Pop

[imintheband]

Ive been playing the bass for about 2 months now and Ive begun to atempt slap and pop. I can pop but my slap doesnt seem to sound the way it should.
When i slap i hit with the side knuckle on my thumb (Im pretty sure thats right) Id ont hit too hard but the string usually ends up hitting the fret board or not but ti still doesnt make the cool jazzy sound ive heard on videos on youtube and stuff, I even made sure I was on teh same frets as a guy in a video and it wasn't workin out. What am i doing wrong?

[Spino]

You have to find the " Sweet spot" around the end of the fretboard. On my Jazz Bass it's on top of the 20 th fret. Just use smple 1/4 note hits ,experiment with position and listen for the quality of the sound and I'tll start happening.G'luck