[greggold]

I am not a fan of RC simulators, and prefer whatever RC time I get to be expended at the field. However I have dabbled with flight sims (on a mac only a limited range of sims are available, the one I have is AeroflyRC9) and one of my favorite models is a indoor F3P aerobatic model called Elanor. Its the best aerobatic trainer you can imagine, allowing the pilot sufficient time to apply correct controls for each manoeuvre. You fly in a different flight regime where the balance of gravity and drag are altered. 

Yesterday at McCoy I saw an Elanor-type model in action, it is an original design, built and flown by Steve. Its a brilliant plane.

Here is an original Elanor in action in 2014. It has 2 counter-rotating props.     
https://www.youtube.com/watch?v=hHP5JF3k1bw

Here are various F3P vids:
https://www.pauzuolis-rc.com/events-list...-in-alytus
(you have to scroll down to locate the videos)

In  RC Groups there are threads and a forum for indoor aerobatic models, with posts mostly consisting of people searching for suitable parts.

Fortunately there are now practical F3P kits by RCFactory on sale:

https://www.rcgroups.com/forums/showthre...ATILE-CLIK

https://www.rc-factory.eu/letadla/indoor...lite-red-2

The kit price is Euro 73. If you buy it with the full equipment set it costs Euro 155. I have a superlite rc-factory model which I found took longer than an average RCFactory foamie to build, but its not more difficult. I fly it in a local oval at sunrise.  I found I did not need to buy the equipment set, as you can source your own suitable servos, motor, prop etc. In Australia Micronwings is a good source of small rc parts, eg 3gm servos:
https://micronwings.com/product/servo-em...m-digital/

Note you can fly indoor models outside, if you get up early enough when conditions are still calm, and you can fly them in a backyard or anywhere.