I just float the bag for 5-10 mins to get the temp right, then dip them, then plop 'em in somewhere in the tank, depending on what lights they had where I got the frag from compared to mine.
I agree with yote, and as for the air method, during low tide, sometimes the tops of SPS corals will come out of the water for a good amount of time. Most SPS will just make a slime coat, and as long as they are wet, they are fine for a while.