"Dry Silo" method. Blimey! Mylar across top o' tube ripped/burst as t' pressure built inside plus t' nose cone had a toothpick in t' tip. Begad! Model may have traveled thru too much water, may have been 8 t' 10 feet o' water (Pool was 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. T' Pool water be "dank" because t' city left it filled with water over winter.