Thought I'd share this after reading the other thread. Here's a homemade method for mounting the Pro-70 or AT831b mic that works real well.
John Jorgenson buries his mic into a foam cube on the top of his guitar which is attached with velcro. I didn't want to use velcro on the top of my guitar so I made a foam cube with a slit on the top and attached some velcro strips so I could attach it to the strings near the tailpiece behind the bridge. I bury the mic in the foam and just run the wire under the tailpiece. Looks clean and works like a charm!
-It doesn't pick up certain frequencies off the soundhole that howl or feedback easily.
-Does not pick up the "clack" of picking noise.
-Being buried in foam away from the soundhole NOW you can play your guitar in a LOUD, NOISY environment with NO feedback! Noisy bar gigs, no problem now! (provided your amp isn't in front of you or facing the mic of course)
Here's a couple pictures of my cheap little setup. I use this on all my gigs with John as well as all my other gigs in small noisy environments like the noisy crowded wine bar I'll be playing at tonight!
Live life and play music like it's your last day on earth. One day you'll be right- Russel Malone