I was very interested to launch a multi stage rocket at some point and I had 3 x B-0 booster rocket engines with me. Given the lack of a very wide space for recovery I opted for the Mongoose as my two staged rocket. The reason for this is because I felt that the Mongoose being an easy to build kit isn't optimised for high altitude launches and I certainly didn't want to lose my rocket after the first launch. It surprised me that the engines were to be taped together for flight. This however presented absolutely no problems at all.