C309:
I wouldn't bother to try to improve things if the flight wasn't so bad.
I take the fletch off of mine too for the same reason. It does minimize any errors, but when the arrow hits the water (a thicker media than air) it does still "steer" the arrow along the path it is currently pointed...which in my case is to the right, instead of letting it continue its oscillation and eventually stabilize. --maybe I just need to take longer shots, like 50 yards.

AURTHUR: (I figured you get on here eventually )
Thanks for the data. I don't have a way to measure it myself.
How long was the arrow you measured the spine on?

The line attatched does make a huge difference. It occurred to me to investigate how the drag affected the flight last night after I made my original post.
I tried making several adjustments with no line with only dismal results. Once I got the line attached, it got better, but still not great. It shoots predictably, but always angled to the right.

If I shortened the arrow (I could take several inches off) that would only make it stiffer, wouldn't it? ...making my problem worse.