DR T.J.

TheG, What I would do first is forget about the BP100, IMO one of the worst pickups for DB out there. Not in the least because of where it is fitted to the bridge: where you get the least amount of low end. As a result you need to compensate and add low end on your amp which can send everything into feedback. Realist pickups aren't great for loud situations either. Get a Bass Max or, even cheaper, a J-Tone. I find that they both work great, I never have any feedback issues and I've never covered my f-holes. Of course the personality of the bass is also a factor as no two are the same, but these pickups are highly feedback resistant on anything I've used them with. Absolutely bring a second speaker if you are afraid you will be pushing a single one to it's limits. It will at the very least result in more headroom which is also a great anti-feedback tool :-). Contrary to what some people say: leave your cabinet on the floor. It is the coupling of the cabinet with the floor that is usually the best recipe for tight low end. If you are going to use two you can stack them and see/hear what that does, but I would experiment with having both on the floor as well. Or even raise one and leave one on the floor. Good luck!