I simply float the bags for 15 minutes to allow the temp to sync and then put a net over a bucket and pour the water and fish in it. Put the fish directly in the tank. In the past I have just cut the bag open and dumped the fish in water and all when I know it came from a source that had not used copper.
A lot of people are concerned with quarantining for such things as ick. I've never really had a problem with ick. Very rarely I've seen spots on tangs but this usually clears up in a few days.
Not trying to go against the careful policy of quarantining everything but just in my experience is had not been necessary for fish. Now, coral is a whole nuther story! Don't trust anybody, not even your mama!