You might consider an electric as your 3D trainer. Smaller, cheaper and the ones I will list here are made of foam so they don't break when that 3D move doesn't work. You can practice at home, or in small spaces that just won't work for a glow plane. When you get good at it, then move back to the glow for your "big" 3D plane. However I warn you, electrics are tons of fun and so convenient.


3D electrics

Shockflyers
http://www.shockflyer.com/

>Eagle 3D Foam ARF Aerobatic plane - This one looks like a lot of fun
http://www.hobby-lobby.com/eagle.htm

>The Cobra - 3 D Foam Flyer ARF
http://www.hobby-lobby.com/cobra.htm

Pigi - 3D Foam Flyer ARF
http://www.hobby-lobby.com/pigi.htm

Mini GeeBee - 3D Depron Flyer
http://www.hobby-lobby.com/minigeebee.htm

IFO Demo at the 2000 Tournament of Champions
http://www.wildrc.com/htmlpages/movies/toc2000.mpg
Flying Combat in a gym
http://www.wildrc.com/htmlpages/movies/mk3combat.mpg

A bunch of IFO Flight videos including one inside a 15X25' office
http://www.wildrc.com/htmlpages/flightvideos.html