Years ago I operated a Nimbus 3 off of the little airport at Montague. The runway lights had claimed at least two glider wing kills that I knew of and my long wings were at high risk. I purchased some 6 inch diameter PVC pipe and split some 8 foot sections in half with a table saw. I would shove the near side end into the gravel and lay the far side end on top of the light. It worked for me on the one occasion I needed it and only left a slight scuff on the bottom of the wing. I covered four lights on each side in the probable impact zone and had my wing runner remove them after launch. Cheap and easy. I know others borrowed them and I think they helped. Rex Mayes came along later and did it the right way, but not many small airport FBO's are also the glider operation.
Dale