The key is scouting and knowing hes going air. If the ramp is walled off, suicide an overlord. It's worth 100 minerals to know what they're up to.
Generally I get 3 queens in my base every game nomatter what. They are helpful for defense against air (and ground) and while two are spawning larvae, my third is spreading creep. Creep highways are essential for map control so 3 queens isn't a waiste.
You should also have a lair before they have air in your base. Vs terran its a good idea to turn an overlord into an overseer. While spore crawlers can provide detection, you may need mobile detection to protect anything you dont have a spore crawler at.
Awesome thanks for that I usually get one queen and then build another at my expo. Ill keep two at my main for now on =D
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