I'm working on a design for a chambered bass, being narrower than an ABG, but still with enough empty space for a good "upright" sound. I'll be using a single piezo pickup I've got laying around. My question is about the pro's and con's of installing the pickup in a bridge that's glued to the soundboard, versus mounting the bridge in the manner that Rob Allen does, or like the Mezzaluna bass. They mount the pickup in a bridge that is isolated from the soundboard, and is mounted in a recess in the body's frame. Any advice/opinions on this subject would be appreciated.