You need to get out and play. I know that's exactly what you want and doesn't really help, but that's also really the only way to do it.
Start looking for any musicians classifieds that you can, and contact every single one of them that is looking for a bass player.
Sadowsky Club #259|Gallien Krueger Club #922
EBMM Club #70|Modulus Mob #8
Effects Addict #14|Mesa Boogie Club #33