mystery cover.jpg

this cover came with the project, looks like it's never been used .. it's not quite wide enough to cover the turtledeck openning ...
finally got this project to the ready for flight stage, done lots of test runs in the field, tail up taxi for a couple of seconds before having to throttle back .. so it's time to go to the bigger fields an hour away .. but have to wait for dry roads, spray on the exterior will be bad enough, but certainly don't want the interior coated as well ..
I've seen mention of a cover for trailering, but the tightening straps and narrow width are suggesting this is for something else ..
did somebody say there is no such thing as a stupid question?