ahahah sick plants man those puppies are big eh! i grew a 16 footer with my cousin one yr but we started tieing it down around the 4 foot mark and by the end we had a good 2 pounds of dried bud from it , for next yr make sure you start tieing them down so all the little lower branches get sunlight and then they grow huge and up straight making one branck into 10 or so crowns and by doing this you get alot more bud from your plants even the top crown tie it down and you will see your crown get MASSIVE cause all the buds will turn up right and start to grow up wards and in the end your crown is just crazy so when ever your board just get some string and tie it down i swear you wont be disapionted at all