I designed this mount for a Cessna Skycatcher 162 while learning to fly. This helped me get a better idea the planes actual angle of attack when landing. The first version "wing_strut_mnt03" has the gopro mount inline with the strut. The second version, "wing_strut_mnt04" has the gopro mount turned 45°, which allow the gopro to fit better.
Once printed, you can use grip liner (can be found at hardware stores and kitchen departments) and a large velcro strap.
I am also working on several other version to fit Cessna 172 and 182.
I printed a couple of versions in ABS and ColorFabb's XT.