I always thought you were supposed to use Hypnosis first that way you could get the most turns out of Trick Room. My understanding is that you Sleep -> TR -> boom -> 4 turns of TR for your sweeper...instead of TR -> Sleep -> boom or switch -> 3 turns of TR as chris seems to be implying. With the second method you wouldn't need Hypnosis, but you are also much worse off in terms of what happens after zong booms.
Hypnosis should be the main option on its moveslot, but I do support Explosion being the main option over Earthquake. Not only is Magnezone rare, but the free switch that booming provides helps your TR sweeper exponentially.
Trick Room counts the turn of use in its cycle, leaving 3 turns most of the time and 4 turns if you somehow die on the turn you set it up. You always sleep first, yeah.







