I haven't got a plane yet but a piece of advise I heard was to fly as high as you can comforatbly see the plane. Meaning still being able to tell the direction and not give you neck pains when you do venture closer to your position.

The guy who told me that was training someone that day. The plane was some high wing homebuilt trainer that had a 76" wingspan and the plane looked as small as a parkflyer they had it so high.

I think that'll be my rule of thumb when I start crashing... err, flying.