Where do you keep your Thumb? Ive always read in books that you should have your thumb strait on the back of the neck, but mine raps around and peaks out by the e string. Ill move my thumb to the back if im making a 4-fret strech or somthing. But keeping the thumb in that postion would give me problems. i heard keeping your thumb like im doing will kill your joints. but ive seen MANY bassists that do this with there thumb, most of them have the strap down low, like me, but even when im sitting down i do this. so, who here keeps it strait, and who doesnt? i say, do whatever is comfortble.