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 dont bend real well anymore, too much Silica I guess. When I build the next RDWC setup I am going to have access all around and a path in the middle of the plants so I can lay on a creeper and trim under.
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.
Cloning is a worse addiction than seed buying, be carful before you go that way. On occasion I will grow an Auto and a photoperiod in the same area just so I can tell the Auto its linage will soon die while the photoperiod can go on forever.
Cloning is so damn easy, hell they will root in a clear glass of water, try it. You grow several plants at once so cloning will be easy on the wallet compared to buying a seed per plant. Pointless to clone autos too so its win/autos suck/win
I have tried several things to reduce the stretch, prayer doesn't work, neither does facing east and chanting but topping does for sure, defoliation helps and so does bud pinching but what works best for me in the RDWC setup is less N until 2-3 weeks after the show signs of flowering