Container Sizes and transplanting:
Before we get into the trellis, let's talk about an often under estimated subject, container sizes and transplanting. This is somewhat a different subject, which I will go into in another article, but it is worth mentioning briefly here. If you scour the web for people who are growing "one pounders", you'll find they all have a few things in common, but most importantly, monster containers. They aren't getting a pound out of a 2 gallon smart pot. In fact, I don't care for the fabric smart pots (except for a final flower container). The reason being is once it is in a fabric pot, the roots grow into the fabric, and then you stress it by transplanting. If you intend on moving to a bigger pot, use a pot with SMOOTH sides, so it will pull out of the container easy, without damaging roots.
Whether you are in dirt, rockwool, coco, whatever, we want to move up in container size frequently. In the above pictures, the plant was started in a 2" cube from seed, then moved to a 4" square pot, then moved to the 6" net pot, then one gallon pot, 2 gallon, 3.5, then finally below, a 5.8 gallon pot. Some may think this is too stressful for the plant, but if done correctly, your plant won't skip a beat. The root ball will be able to slowly build a large mass, instead of being stuck to the sides of the container.
Another great writeup!
Other than the scrog, I employ all of the techniques you're discussing. I have scrogged in the past, but for my current grow room, it's not practical. I also like being able to move each plant individually. (I use an Ebb & Gro)
I thought you no longer liked airpots due to the fungus gnat problem?
Tieing down plants is very easy with my Ebb& Gro too. I just spent a minute drilling some small holes just under the inner pot's rim, and now I can tie down anywhere I like. I use garden wire rather than string. I was using string, but it is MUCH more work tieing knots. You're a commercial grower Sl1ng. You should try wire. It's soooo much faster.I just leave my little pieces of wire attached to the bucket and they are ready to go for the next batch.
I just thought of a question for others that train their plants withOUT the scrog....
Do you keep them tethered for the duration?
I untie all mine after only a few days. I've found that the branches tend to take on the bent shape, more or less, permanently after just a couple days. I did my last round of training the week before flip. I went through and did a couple maintenance passes over the next week, but I untied them all in the first week of flowering.
My approach is to keep the plant low an wide until I flip. At that point I should already have all the branches I'm after. Then I'm just letting them grow straight up during the stretch. Then at ~3 weeks after flip, I do the final defol and clean up all those lower branches that are not going to produce nice nuggs.
Hey cap'n whats the white wire? Is it what you tie them down with or is one of those new grounding wire deals that i saw on the Internet? Cant remember the name but it grounds the plant and they say thats what it takes to get outdoor sized trees? I think all you got to do is grow em cap'n style
Anyone is welcome to drop by my journals and see my technique, I yeild around a pound p/plant in soil, under a 400w MH/HPS combo. No Hydro, No topping. I remove some fan leaves as I train my plant to suit my space and also to allow light to the inner branchings - I normally have over 14 new vertical cola's, instead of the 1. These have varied in size from 1 -2ft in length and 5-6" wide.
Ok well thanks and KEEP YA GARDEN GREEN!! Smokemup
I'm subbed n hooked.
I'm starting my first ever grow in a week or two (clones on order ). 9 each of AK47 and White Widow. Clay pebbles and coco being my mediums of choice. The little ladies will arrive in rockwool socks and will be planted in 3.5ltr pots. 2-3 weeks later they'll be transplanted into 5 gallon "buckets". Nutes wise; Canna A+B, Superthrive, Rhizotonic and PK13/14 for flower stage. My home made "tent" measures 1.8m wide x 2.8m long x 1.8m high. 3 x 600w HPS for lighting (maybe 4 if I can), 8" Ruck for extract, 3 oscillators for exercise lol. Induction will be via two ducted vents that are cut into the bottom of the tent (these allow the power cables into the tent) and will create a neg pressure. So, after that info, do you feel there's anything I should do to improve my chances of hitting my target of 5oz dry per plant? 
Your tent is roughly 6ft x 9ft and 6ft tall so that is about 54 sq feet, if you're able to use it ALL for growing. For your first grow, a really agressive goal would be one ounce per sq ft = 54 ounces (you might need more light for this). Or, about .75 grams per watt.
. I've got a 4th 600w HPS promised to me so hopefully that will help. I'm getting loads of helpful advice off another member, Zoot, who is also UK based and kinda understands the different constraints we have here. Ultimately I'm planning 2 home grows prior to getting "premises" where I can be a bit more experimental and adventurous . I'll definitely subscribe to your threads though. Hey, knowledge is power lol 
