I had the same problem with my Great Planes Cub with the one piece 81" wing. It was such a pain to haul around, that I hardly ever flew it anymore and I almost sold the plane as a result.

SO....Last winter I decided to "CLIP" the wings and I am sure glad I did. Now the wing is still one piece but only 68" long. I can now haul it with ease and it still flies fantastic and is way more aerobatic to boot.

I removed 2 bays from each wingtip to accomplish this but still used the original wingtips.
It was an easy one day mod and I am exstatic with the results.
Where there is a will.... there is a way!!

Good luck
Curt