I agree.  Just scout the base early as you develop, and if a decent skilled anders is on the other team automatically drop the first turrent, that way its set-upgrade to railgun takes no time and once you scout a bit just by seeing the way the base is set up you'll know if they're rushing or not.  If you get caught with your pants down try to build opposite the rush, only really good rushers will micro the warthogs around the base-so try to build at the front a supply pad (which the enemy will destroy) and then destroy it for the resources before they do, then try to rebuild it again while you have your turrets building in the back-make sense?  Rushes only work when the rushee isn't prepared.

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Scouting > Any Rush. If you aren't rushing, prepare for the rush-its that simple.