A couple of dodges from the Far East when going into tight clearings.
Hover at a couple of hundred feet so that your shadow is in the clearing. As the shadow is the same size as you, the sun's rays being parallel, you can see how much room you have. When it is very tight descend with the scenery close to the nose for the tail rotors sake, The downwash will push the leaves down so then move forward until they are affected by the rotor tip vortices and kick up.
That's as close as you can get.