[quote name='Clarky' timestamp='1377857294' post='2192760']
To be fair, Jaco did play fretted basses too. And he did bolt a maple Precision neck on to the 'bass of doom' body for that instructional video when he was badly on the slide (mentally). Mind you it was maple, not rosewood ...
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I had the VHS of that and, my God, it was appalling!
FWIW, I recall International Musician doing an interview with him back in '77 or '78. In it, the author relates how JP opened up a double-flightcase to reveal two Jazzes. One appeared to be the BOD and another had a fretted Precision neck on it, which JP used to practice his stretching on. Unfortunately, I can't recall whether that neck had a maple or a rosewood 'board.