re: Easiest way to keep A/C drip pan from filling up?

Extremely timely thread, as mine overfilled yesterday afternoon and started dripping through the air filter grate in the hallway. I went up in the attic to scope it out and found that the drain pipe had something small thrown on top of it, keeping it at an angle where the gravity-feed wouldn't work. So I fixed that, but since the water had been sitting stagnant in the pipe so long it clogged up.

Eta- I wrote the next part before reading the entire thread, obviously

I'm thinking my next move will be somewhat ghetto/genius, as I plan on going outside to the drain outlet and adapting the shop vac to suction it out, like emptying a fish tank. Any reason this would be a bad idea?