Listen to this guy....This is how to do it. Simple and with great results. Throw in a bit of F&D and it pretty much runs itself. Ya don't even need to scrog, it looks after itself, the hardest bit is stopping ya plants swallowing your lights. Shop around for good quality welded wire fencing on a roll (not box link stuff), it will save your a shit load of time and money building a frame etc.... just unroll as much as you need then tie ends with twisted wire. Will stand alone and do what it says on the tin. I veg until about 12" tall then flower em under a 600hps at distance, 4ft + and stretch the fuck out of em for week 1 of flower, then into vertical rig. I find much better general light penetration when they had a good stretch. Finishing height is about 4-5ft. I love watching worthless lower popcorns coming out as big fat tastey buds. You can grow monsters (if ya swing that way) with this method and tie you plants into the screen to hold the weight.
Main drawback....... what a fucking polava at chop time.