sorry still rambling, also ballistic stretching is good for warming up a muscle for quick movements but really isnt effective for flexiblity, b/c the muscles contract with the sudden movements similar to that of activity.
"When muscles contract (possibly due to the stretch reflex), they produce tension at the point where the muscle is connected to the tendon, where the golgi tendon organ is located. The golgi tendon organ records the change in tension, and the rate of change of the tension, and sends signals to the spine to convey this information (see section Proprioceptors). When this tension exceeds a certain threshold, it triggers the lengthening reaction which inhibits the muscles from contracting and causes them to relax. Other names for this reflex are the inverse myotatic reflex, autogenic inhibition, and the clasped-knife reflex. This basic function of the golgi tendon organ helps to protect the muscles, tendons, and ligaments from injury. The lengthening reaction is possible only because the signaling of golgi tendon organ to the spinal cord is powerful enough to overcome the signaling of the muscle spindles telling the muscle to contract.
Another reason for holding a stretch for a prolonged period of time is to allow this lengthening reaction to occur, thus helping the stretched muscles to relax. It is easier to stretch, or lengthen, a muscle when it is not trying to contract." = holding is better, ballistic can cause microtears in the muscle fibers that lead to shortening.
in response to godsize, excessive stretching fatiques muscles groups causing them to contract and "shrink back"
basically to achieve the best length in the ligs would be to work them out somehow and then stretch them out so they heal in the elongated state. maybe abbreviated hanging sessions.