It takes a while, but I took off the decals on my Funtana (40 size) by pealing back a little of the most loose edge. Then I took a paint brush and dipped it in paint thinner. By putting a little pull pressure on the decal and running the brush back and forth across where the decal attaches to the plane, I was able to remove the decals without any damage to the covering on the plane. I would recommend checking on a small spot before going full blast though.