Here are some pics of the Beyer M 88 and the H-clamp.
I seem to have the best luck w/ a mic on my bass located between the bridge and the end of the FB. I get a sound that I like with the head of the mic anywhere from their mid-point up to the end of the FB, and even a little north of there. This is the latest orientation that sounds real good to me. I cant really reach those spots very easily w/out the H-clamp or a gooseneck like my AMT.
I think people like Adrian Cho, Bob Branstetter, piro and perhaps others all gave me the idea to try a mic around this part of the instrument. Comparable perhaps to an AMT w/ a tailpiece mount.
I think this mic sounds more natural on my bass positioned like this than anywhere down around or under the bridge. I spent time today (again) trying different things poking the mic through the afterlengths of the strings in different spots and at different angles, much like Chris F., Uncletoad, piro's latest, and others. (The steroided-out windscreen on the Beyer makes it ridiculously easy to do that and have it stay put.) There are spots with a fair amount of output in that region below the bridge on my bass, but through this mic they all sounded either a little too boxy and ringy or a little too boomy and hollow to me. I like it as shown in the pics a lot better.