im no fan of cfl's either and a hid will always out perform them but im sure you could do a scrog with flouros and have better results versus sog or other style of growing with flouros.
scrog was originaly used to get the best yield from low power lights whether it be flouros or a small hid.
as per the lighting and avoiding stretching you just leave the screen off and keep your lights within a couple of inches of the plants until they reach the screen height then you install the screen and you are basicly lighting the screen from then on, as you are training the plants to grow under the screen horizontaly instead of verticaly and all growth that isnt specifically used to fill in the screen is typically removed by cutting it off to allow better airflow through the screen this includes leaves and any branches you may of not used to fill the screen.