I used bushmaster about 1 week before 12/12....my sativas HATED it but they are not tall at all. They are over 30" though.....30" is pretty small. Your going to have to tie them back
I LST my 6 Sativas which came from Feminized PPP seeds, just be gentle and slow or you might get hermie or male. I ended up with 2 PPP male plants, but I read others have same problems with these Feminized PPP seeds so it may not matter.