Foxmouth, if you are too low for a turnback (given your airplane performance characteristics, the environment and your own ability), and there's also no opportunity to land ahead, or left/right of your track, or anywhere else in reach, then what do you expect us to advice?
The best I can come up with is something I think the RAF was already saying in the 1930s: "Try to hit the softest object available with the least amount of speed."