So what's ideal for either of these ? Single door ? Double door ? Pan trigger ? Bait trigger ? Wire trigger ? Wood ? Wire ? Powered doors? In powered doors ? Tall and narrow? Short and wide ?

I seen a really cool squirrel trap they use in the UK, wolfie. I'll try to post a pic for ya. They are awesome!

Well I built one Sqiirrel cage that caught 5 in an hour, and made me $275.00. + the $90 set up fee that morning

Wire 1.5 x 1" is Required when trapping this way

Wood closed box trap will catch you more Rabbits than wire cages will.

Never trapped squirrels with a box trap but you catch more rabbits with the wooden box traps.

Fenn mk4 traps are very cool. Talked some guys from the UK on FB about them

So what's a general good size for a rabbit box and is a single or soubl door better ?

Those Fenn traps look cool to me too, I'd like to try a couple out. The website Fourteenacre had a great designed squirrel trap that looked like a bird house and when a squirrel was caught it was completely hidden. I went to look at the site again a while back to try and get dimensions so I could make one but they discontinued it. You might like their site though, some cool stuff.