Man, I clone before I begin flowering, as well as sometimes when I bottom dress during flowering, and never have a problem, other than the occaisional clone not making it, but overall, they mostly survive the transition to 24/0 and either continue to veg, or revert to veg, and take root... I tell everyone to clone away... U really cant go wrong... However, like mentioned above, I have seen cloned genetic lines become weaker and more prone to hermie-over a really long time, and numerous "generations" down the line, though... I have some original landrace Panama Red genetics that I am cloning as we speak, in the hopes to keep this bad biotch churnin and burnin... It has some really lovely phenotypes, of the few seeds I started, and of 3, I got 2 females, so I am a happy farmer right about now... But, the differences in this equitorial sativa are so vast,as compared to the traits of some of my other seed stock, wherein I have several different equitorial sativas, hybrids, and indicas as well... It's so nice to have lots of genetics and the ability to combine them and see the surprises that lay in store...