When I learned to takeoff (last October), I was taught to carry the plane out to one end of the runway, brace the plane to run up the engine, then take it off standing at that end of the runway. That way it would have been very difficult to have the plane come back at me. I was also taught that if the plane was going to go off one side of the runway to cut the throttle. My trainer used to exit the runway very easily, until my instructor had me move the pushrod in on the servo arm to make it not so twitchy.

Do I still stand at the end of the runway for takeoffs? No. Now I put the plane down right in front of me at the pilot station and then taxi it to the runway (unless the city has cut the grass recently enough that I can takeoff from the grass).

As for the safe area on takeoff, that one is very hard at my field. Normal takeoff is Left to Right, pits to the left of the aircraft. That makes to the right as the safe way to turn. And it would be if it was not for the tall tree line approx 100' on the other side of the runway. At our field, you climb out as straight as you can and get altitude as fast as you can, so you miss the treeline at the end of the field. Our field is at the bottom of a "bowl" with tall trees all around. No turbines flying here. The 1/4 and 33% planes have enough trouble trying to land.