"Dry Silo" method. Avast! Blimey! Mylar across top o' tube ripped/burst as t' pressure built inside plus t' nose cone had a toothpick in t' tip. Model may have traveled thru too much water, arrr, may have been 8 t' 10 feet o' water (Pool be at least 13 feet deep there). Usually didn't have it anchored that deep and all other flights were vertical.. I shot this from t' high dive board's ladder. Ahoy! Blimey! T' Pool water was "dank" because t' city left it filled with water over winter.