Originally Posted by jlo95
You may have to get a different type of pickup then. I have a realist (copper plate that sits under the bridge) and it's a wonderful pickup, but can be pricy. There are also pickups that clip onto the bridge if you're looking for something easier to attach.
+1 Since it's the only, place to logical mount a magnetic PU
pickups use that location. Biesele, Schaller, and Pierre Josephs all mount that way. One of the magnetics made by Michael Zadow uses velcro adhesive strips to attach the pickup to the underside of the fingerboard.