When flying around with any Helicopter that the CSLA CDLC offers you can basically cut down an entire forest with each Helicopters Main Rotor.
Here are a few example videos:
I think I don't have to mention to any of you that this is far from realistic and definitely needs to get some more work and tweaking.
If you require further information and/or details hit me up.
Example for Mi-17
1: Open Gabreta in the Editor
2: Place down a Mi-17 from the CSLA units tab (make sure you are the pilot) at the Eastern Airfield
3: Drag the Helo midair
4: Head Southeast to the nearby forest
5: Get on an altitude so that you can directly fly into the trees
6: Slowly (~30 km/h) fly into the trees
7: Keep going until satisfied
I was using the Simple Flight Model