To continue with the fiddle yard i have done some drawing on paint to show where the fiddle yard will go and ow to get trains from the main layout to the fiddle yard under the layout:The first one is of the left side of the layout and fiddle yard
http://img.photobucket.com/albums/v687/dynamite26/mylayout1.jpg
And the second one is off the right side of the layout with the train lift and fiddle yard
http://img.photobucket.com/albums/v687/dynamite26/mylayout3.jpg
Well the fiddle yard will have it's own controller to power the fiddle yard and when the lift comes down there will be some sort of contact strip to connect power from the fiddle yard to the lift,and when it is at the main layout level one of the main controller will put power to the lift via contact strips aswell, so the lift will only have power when it is at either level via the controllers.
Here's another drawing of it,i will do the proper drawings on paper anyway here it is
http://img.photobucket.com/albums/v687/dynamite26/mylayout5.jpg
Just done a quick drawing on paint program to show how the power will be connected to the lift
http://img.photobucket.com/albums/v687/dynamite26/trackconnection.jpg