I acquired a 7.5" Cardboard Hawk from a club member as LOC discontinued making them a few years ago, and it's a fantastic rocket to build. I took my time and made adjustments like adding stiffy couplers that run from the forward centering ring to eBay. I launch in the desert so it can be tough on rockets. What you will see in the build thread is the attention to detail for getting those massive fins aligned. I ended up building the fin can outside of the rocket so I could glass the root of the fins and make sure I had everything as close to perfect as possible since it's got a 98MM motor mount and will be flying N motors in it.