Of course, that's the critical stop for 90% who'd be willing to stay put in DC long enough to get the job done. Most people on our side are producers. They can't just stop what they're doing for a solid month for any reason.
In order for a group such as ours to pull off something like this, we'd have to co-ordinate scheduled reinforcements. A guy stays for four days because that's all he can do, then someone else comes and relieves him so he can go home. In that way, the numbers aren't diminished.
It would take a lot of work to organize, but it could be done. Nothing's impossible, if the will is there.
Sustained protest for a couple of weeks or more would be the way to go, IMO. It would take at least a few days for the media to take notice - if your lucky and have enough people.