I think I throw more with a hammer than a rail, but I've seen many people throw with more of a rail style and have been thinking about experimenting. Here is how I'm interpreting Blake:
For the hammer, what it really comes down to (it seems to me) is the feeling of throwing the disc's center of mass (aka "feeling the weight shift") instead of throwing off center. The disc is pulled on a straight line, power is applied through the disc's center, and the rotation is imparted by the rolling of the disc around the hand and off the pinch point. The wrist goes from the opposite side of the disc to the right side (RHBH) at the rip. It's the flinging feeling of getting the pinch point around, and applying a smooth acceleration through the disc's center, feeling the hammer pound, that allows you to get decent distance without much effort.
For the rail, I'm interpreting more wrist wag with the disc being pulled more from the front and the rotation coming only very late (the extension and contraction of a tendon bounce, with rotation coming from the uncoiling very late in the throw). This is probably where good hand and lower arm strength (iron grip) should come in very handy. Also, the ability to apply power rapidly and in a controlled manner toward the end of the throw.
It's hard to describe all this in words, but the pictures are helpful.
Star Shark wrote:He doesn't need to throw that hard at Sylmar. He aceruns most of the holes there with a leopard at most.
Or a Ghost...