I'm trying to experiment with a technique that I believe was used by Buddy Holly and perhaps other guitarists. That is mixing the guitar signal with a microphone signal from the guitar being recorded acoustically. With an admittedly crummy karaoke mic the sound is at a low level and a bit noisy when boosted. Where is the best place to position the mic to get maximum signal (whilst still being practical to play - given I'm not going to play beyond the 12th fret)?
That's an interesting technique. I would presume that the optimal mic location would be smack dab in-between the neck and the neck pickup. You'll get a little bit of resonating from the body, and that creamy sweet spot on the strings.