It's a bummer that people bang on the floor joists; I was going to suggest clamping to them (or that huge beam, which shouldn't budge unless someone hits it with a truck). A C-clamp and some gaffer's tape would be the "cheap" way to do that. I did a few recordings like that in my basement and they worked out pretty well. But no one was banging on the floor joists like crazed chimps. You have shock-mounts, though, so the vibration may or may not be an issue.
You might get the venue to OK a semi-permanent installation of a microphone "gooseneck" (the flexible "payphone cable" looking thing) onto the beam using an appropriately-sized plumbing strap, some scrap rubber (a bike inner-tube) for vibration dampening, and screws. That way, it'd be there every time you went back.
Topic: Taping in a VERY small bar -- close to P.A. stack or Healey? (Read 7174 times)