I just float the bag and coral dip if the parameters are similar to my water. If the parameters arent similar, I drip acclimate to a bag floating in the tank for 3 hours. I then set the frag plug on the sand for a week (or more if needed) and if the frag looks to be recovering very well, I glue it where I want it to be permanantly.
You might be an engineer if...You have no life, and you can PROVE it mathematically.