The Permian Soaring Club at Odessa, TX has a wings-level ground
transporter for their Blanik L-13.
See a very small photo of it on their club listing at www.ssa.org
Click on "Where To Fly" / Texas.
Contact the club for more photos / design details.
I'd pull it backwards rather than forwards . . .

Credit should be given to Morris Kline who designed a similar, elegant
transporter for his 1-26 back circa 1960.