I have seen one fly, it did really well. I had a plane called the toad that was carboard too! Fun.

If you think your homeowners will cover everything, you are mistaken. You have how high of a max on your policy? If someone sues you for killing their kid who was standing there watching your plane when you lost controll, I am sure they will seek a lot more than your insurance will cover. Everyone hates paying insurance, but if an accident happens, and they can, you will be glad you had it.