Helicopter and flying tips - and where to practise?

Where is the best place to get as much helicopter practise as possible, to get used to my custom binds?

Thanks for the suggestions guys.

PS...

I use SPACE to pull up (mandatory for battlefield flying)

LEFT CTRL is to put the nose down.

Mouse inputs still work for smaller inputs

Q is roll left (nice, as its a full strength roll with a keypress)
E is roll right (nice, as its a full strength roll with a keypress)

The commo rose was moved to CAPS LOCK
Bail out was moved away from my fingers to T where I wont knock it accidentally.

Thats all the new binds taken care of.

Once you have mapped the above:

You can press A to yaw left, WITH Q to roll left, for an extra sharp turn.
also
You can press D to yaw right, WITH E to roll right, for an extra sharp turn.

Mapping keys lets you tap them for smaller inputs.

The ultimate helicopter flying training test, is to find an object, and fly in circles around it, whilst shooting it, without turning away from it. Spend several hours mastering this, and you'll be a really effective pilot! Its what Im trying to perfect - getting there! :D