I just got from some more practice today.
I was trying the modified fork grip and thumb orientation.
I agree with your results Furthur, as I got the exact same results.
Also,
The modified fork grip is working wonderfully for me. I did check the grips article and my version is not shown. - It's basicaly the fork grip, but with the pinky tucked into the hand and under the disc....the ring finger is at the bottom against the rim of the disc with the middle finger stacked on top......no flutter what so ever. The only bad thing is that I find my self switching back when throwing my putters...maybe I'm just not used to it yet?
Also,
I really got a hold of one....it's the first time I've ever had a disc abruptly flip @ 275 ft...I was amazed....I knew this throw had some stink on it, but man was it cooking...and then, whack! I mighty oak reached out and grabbed it, I swear the branch moved down 2 feet just to grab my disc. I was soooo mad. - I expect the throw was around 425. I'm normally throw approximatly 350.
Anyways, I'm going out again tomorrow after work, maybe then...maybe then.