SCROGers

I trim under the net daily from veg to flower. If it is a leaf that isn't going to get light or a shoot that will not get above the net before I flip it comes off. I try to do a little almost daily rather than any one big trim. In my opinion I think it's a little less stressful. 

i remove any unwanted limbs as it stretches towards the net...some limbs may need to come off...once it hits the net  i remove all unwanted growth under the net and aim the limbs in directions i want em to go..so then its all clean under net and only growth above net will grow and not waste any energy

I wanted to expand on my answer a little bit and I hope this helps. I have always had a small grow space with limited height so I studied how to get the most bang for my buck with the space I have. I read a bunch about Scrogs and it seems like the easiest way to maximize my yeald. There are a bunch of purest online who try to act like Scrog police, screw them and do what works for you. For my Scrog I drop the net on my plant usually within a week of topping. Basically I am trying to spread the plant out horizontally as soon as possible so promote the small bud sites that develop at each node. These bud sites in a normal grow are usually cut off because they tend to produce " popcorn buds " but in a Scrog the develop into great potent buds because of better light penetration. So basically I am trimming a leaf here and there almost daily to get the most light on the developing bud sites and in many cases that means sacrificing a fan leaf that in a normal grow you would  not touch. Again, everyone has to do what works best for them and if anyone tells you that your plant isn't what they would consider a Scrog then screw it and enjoy doing what works for you. 

i have 8 colas then lst them out then just laid the net on top of plant what i have been doing is 2 slow the plant done on the stretch i hope !!!