This method is very simple and can be used whenever you want. It doesn?t matter if you do it during veg or flower. Its all about the lower branches that we need to spread out. When tying the lower branches down you will get a better air circulation and that will reduce the chance for mold, also the yield will increase because the sun can penetrate the canopy better.
You can use strings or ropes or whatever you want to tie the branches, don?t tie them to hard because they could snap. I knew a guy who used the inside of the tire of a bike, because this stuff stretches out the branches won?t snap when its very windy. Be inventive. Also don?t bend the branches all at once in one day, bend it more and more, day by day, this way the branch wont snap. After doing this you will notice a very large open area, Because all the lower branches have been spread open, don't worry, in a couple of days the improved sunlight penetration will fill it up again. Using this method, you will create a wider plant which will have several more productive bud sites and heavier branches than any plant that wasn't trained this way. It's like scrog without topping the plant, but instead of doing it to a little indoor plant, you do it to a tree.