i've tried cloning, it does't work very well. you can clone one, but its on the parents timer, so you're going to get a little runty plant that may or may not have time to mature before it dies.
super cropping is an option, but again, the plant is on its own timer and you may or may not have time for it to finish twice as many buds as it was bred to produce.
topping seems to be a bad idea, again for the same reason, the plant will probably flower before the side branches have a chance to get well established.
lst? dunno, couldn't hurt to try, but i wouldn't get too extreme with it.if you have more than one seed for that pheno, i'd grow one without doing anything to it to get an idea of how long it vegs, then you will have a better idea what you have time to do on the rest of the seeds?\
also, they seem to like to throw a few nanners, but it seems to be a one time thing. if you watch them and catch the few they throw, they should settle down after that