I remember my first (and only) radio controlled glider. Took bloody hours to build, and my first flight was going well, until I turned downwind. The thing just dropped out of the sky, and landed on the only rock in the huge field, nose first. Typical. Was a complete write off.
Think this was the point you were making wasn't it BW? In this case, height was traded for IAS, unsucessfully as it turned out
Cheers
EA