hey all, i'm having a fretless built, and am stuck on deciding whether or not to go with a simple rear dual J pickup or a pair of dual J pickups. i like the sound of a pair of dual J pickups working in conjunction with one another on a fretted bass. but have yet to use it on a fretless. but, it seems like most every fretless guy from Mike Manring to Gary Willis to Dave Beasley like using primarily the rear pickup system. why do so many players prefer the rear pickup sound? is mostly a jaco thing? or is there really no other place to put a pickup on a fretless?