I actually like to use the prairie doggers to my advantage when trying to take V-Bases. Having someone tower out the second they hear a bomb is a great thing for taking a v-base intact w/ hangars up. They're not camping the maproom and they're not shelling M3's rolling onto base, and they're sure as heck not looking for troops when they hear the whistle of 1000lbs comming on their heads.
If you wanna gamble that you can re-up before 10 troops make it in the room, go for it. Just don't be mad when a tiger is in the hangar behind your wirble and you can't tower out any longer.
...also if you have 2 or 3 people doing it, you can always have a squaddie drop another 1000lbs 3 seconds later on the spawn hangar and take out all the buggers re-upping out of there w/ 1 bomb. Get am all nice and grouped and helpless... talk about easy kills.