My rear support came loose in flight and the vibration nearly shook the nose of the plane off. I caught it in time and only did minor damage. I now have a carbon fiber rear support and I also installed blind nuts, use lock washers and blue lock-tight to hold everything in place. I have about 60 flights with that set up, and everything is staying put. So in my experience, I need the rear support. Also make sure you balance your prop, and if you are using the spinner and backplate that came with the plane, check the balance on those as well. My spinner and backplate needed balancing.