I got the notion of all 4 fingers under the rim when I went to some Scott Stokely demos about 7 or 8 years ago. I figured he knew what he was talking about since he can throw 700 ft distand and about 550-600 ft golf drives. I've seen him. I think the fingers should just be off the rim for distance. put them under. fingers on the rim slow the disc down from the get go.
As for the fork grip, it helped me get the nose down by changing the orientation of the disc in my hand. I've got big hands and to get a comfortable power grip, which I used for about 6 years, the nose would be up 90% of the time. with the fork grip, it put the disc in the crease of my palm and left the nose down when I wrapped my fingers under the rim.
At first, it was uncomfortable and my forarm was very tight. I lost about 80-100 feet of D, but the nose was down consistantly and notice more accuracy. I've used this grip for about 5 or 6 monthes. I have gotten all my D back plus a little extra. My forearm has loosened from the stretching and now when I do get a 400-420 ft shot off its a tighter line and more accurate than before.





