whats your stats ? site enhancement is for guys who have built the amount of overall body mass and muscularity they want/need , but have a weak point or two that can use a slight site enhancement.
eg., 230 pound 5'9" bodybuilder competing on stage, but does not look as wide as he'd like to compete well so he enhances his Lateral and posterior delts. over time stretching the muscle fascia and filling the muscle will give it a larger and fuller look (this is not actual muscle growth though)
I don't see the point in site enhancement and muscle fascia stretching until you've reached your over all muscle mass goals, and just need to address weak points.
as for actual site enhance 'muscle' growth . well muscle are made of cells and for those cells to grow and duplicate this has to be done at the 'cellular' level , and in order for anything to get to the cell it needs to go through the blood stream first. so if for example MGF (Mechano Growth Factor) , which is responsible for soft tissue growth , still has to go through the blood stream in order to be signaled to the cell itself. guys think that pinning the MGF right in the muscle that had been worked out will make it quicker , but it does not work that way.