Get a winch plate to mount to the bumper. Then mount the winch to the winch plate.

Warn winch is a vehicle winch manufactured by Warn Industries.

What does a winch and sheave

Because it would be hard to make one big enough, and since they are so big, if they did make a winch, the force might break the plane, and if it was slow enough to not break it(wait, break is for smaller thing, right?), it would be about the same as a regular takeoff. And most gliding planes do not have a power source (and if they do, it's not usually used for takeoff, just when they are going too slow, or something.) so usually they are towed by another plane (or winch launched.)

Terence Winch was born in 1945.