My first crash (Raptor30) was about a four foot hover and I dumb thumbed it into the ground. Pieces went every where. A piece of fin or tail rotor blade was thrown and hit me in the belly near the belly button. It sting and left a funny looking bruise. I thought ... what if that was a bigger piece ... what if I had forward speed

The crash site was about 25 feet away.

I enjoyed watching the good pilots at the Huntsville fly in but just couldn't really enjoy it seeing people standing around pilots (one spotter was required) with their 90 size helis less than 15 feet away doing all sorts of maneuvers within 10 feet of the ground.
I just make sure I'm well within the spectator areas ... for what it's worth.

Good Luck,
d.tipton