I think that in 10 years most of us will look back on the days before autoflowering plants as the old days. Autoflowering cannabis is the future of growing. I've pretty much fully gone over to autos - indoors or out, regs or fems - the predictability of autos is just so much easier to deal with and now autos are honestly every bit as potent, flavorful, and colorful as most photos. I train all of my autos, primarily LST, but I have also topped and fimmed them.
My main way of doing LST is to start laying the plant on its side as soon after it sprouts as I can. I just gently walk the plant from one end of a rectangular pot to the other, spreading the limbs apart as I do. Outdoors its even easier to do because I plant in the ground. In a way, I'm going for kind of a one armed manifold. I'll see if I can get a pic of my Sin Tra Bajo's tonight. All I did to them was lay them down and string them across the pot and I've taken probably 10-12 inches of vertical growth and turned it into horizontal growth and shined light on a lot more buds.