Snowmobile.

Back in the early 70s, The Gatineau Gliding Club of Ottawa (Canada) made
a winter sale of one of their 2-22s. Trouble was their hangar was on the
far side of the well-snowed-in airfield.

We got the glider out on the windswept ramp, a trailer on the perimeter
road across the field about 1/2 mile away, hooked the 2-22 to a
snowmobile with a towrope, and let'er rip.

The snowmobile had just enough speed and power to get the glider into
the air in ground effect and heading for the roadside fenceline. My
problem was timing the release - too soon and it would be down in the
deep snow too far from the fence. I don't recall how close I came but I
remember the derigging as not being a problem.

I logged myself a 1 minute flight.