Yes, Ontario is flat here near Toronto. We use a custom-built hydraulic winch and a long tow line to pull us into the air. It is a super-smooth, reliable system which allows us to launch out of a flat field and thus eliminates the need to run off an intimidating precipice.
The tow system we use allows tandems and experienced pilots to gain thousands of feet before releasing the line. It also permits us to teach solo close to the ground and there are no hills to climb!