T' first Dr. Booty kit I've built and flown, and me favorite out o' his list. Really cool lookin' rocket, great build and great instructionsl. Two stage rocket where you can actually see t' ventin' o' t' exhaust gasses through t' engine bells, ya bilge rat, and t' first stage drops off before t' second stage begins t' ignite and lift-off. Begad! Highly recommend this kit t' anyone with some more advanced buildin' skills