Don't over-think it! Go back to platforms, and ride until it becomes natural, then switch back to the clipless pedals. Just remember that you should not be on the saddle when stopped - just straddling the top tube. Have fun! And getting on and off a trainer shouldn't be too bad, because it's stationary.
The Warrior Princess: 2008 Jamis Xenith Pro / Bontrager Affinity 1 (men's)
2006 Trek Fuel EX 9 / Bontrager Race Luxe
2007 Trek 520 / Serfas Terazzo
Amelia Pond (She travels long distances, has great adventures, and she's a redhead): 2007 Trek Pilot 5.0 / Bontrager Affinity 2 (men's)