Trampoline paddock

I'm planning to use a trampoline for a chicken enclosure and turn it to change paddocks.  The plan is to enclose the sides with chicken wire (to keep birds in) covered with chain link (to keep predators out) because that's what I have available.  I need to find a way to keep predators from digging underneath.  Then, I plan to build a door that will open to a portable poultry netting fence.  Has anyone used these (besides Justin   )?  I will rotate the trampoline to move the door where I want it and move the poultry netting to different areas off the door, like pieces of pie.  I'm trying to figure the best way to access inside the trampoline to fill feed and water.  I'll probably need something inside to give them additional shelter at night.  I'd appreciate any thoughts and help.  Especially, what do you see wrong with this plan?

Bonnie

I have nothing of value to add other than to say this idea seemed a lot more fun before realizing your plan is to have the chickens under the trampoline instead of on it. Now, if you could somehow have the pigs right next to the trampoline chickens, you'd have a live action version of Angry Birds.