Hello gedipeter,
Could please clarify?
I believe that AMA insurance only applies if you are flying in an AMA approved field.

So far all of the guys I've met on different parks only fly when no one is on sight.
Usually when I fly my plane the park ranger and personel is close by... since I fly on very early morning time they leave me alone.
None of the park fliers I've met will fly when park is crowded.

I don't like nitro panes, for my taste they are a little "scary".
The heaviest plane I have is less than 2 pounds and doesn’t fly more than 15 miles, this is less damage than a baseball hit by a bat.
Thanks for you r comments