I shot "instinctive" with a recurve since about 1987. The only method I could find back then to help me out was the Asbell book. In the 20+ years since then, I had gotten pretty darn fluid with my "instinctive" shooting. I was averaging 8.5 to 9.0 points per target in the Western States Triple Crown in 2005 and 2006. I had a max limitation with the shooting method of about 30-35 yards. My eye just wasn't able to focus on the spot at the farther distances. I enjoy field shooting with my Dad, so I tried to adopt to a "split vision" type shooting style that I could shift into a Gap at the farther ranges that the field shooting would offer. I moved my split finger anchor from my middle finger (instinctive) to the index finger (split vision/gap).
I shot this way exclusively since about June 09. My 3-d scores went down. I was now barely averaging in the 7's. However, I was able to shoot the longer 40-60 yard targets on the butts with more regularity. I competed in 2 legs of the Western States Triple Crown this year, but my poor scores are averaging in the 6's. Wow, when you look at it on paper, that stinks!
I know that in the past year, I now shoot more erect (stance that is). My draw increased from just over 31" to about 32". I used a slightly longer bow and hold the bow vertically. I anchor with my index finger. I hold for a few seconds, then release. I can group well on the target faces at known ranges, but when I get on a unknown ranged 3-D target, my consistence isn't what I use to have with the original method I used.
This weekend was the last straw. I decided to go back to my old, tried and true method of "instictive" shooting. I started anchoring with the middle finger and canting again. My shot timing sped up to almost an instantanious release upon anchor, like it use to. It only took me about 15 minutes of shooting before I started shooting my feathers off my arrows at 20 yards again. Wow, I guess the ol' mind remembered "how to ride a bicycle".
Moral of the story...