The only way I found around the halo effect - actually, in my case it was complete blur instead of halo - was to do away with sights altogether. I went back to shooting barebow and using a gap aiming system. Takes a bit more practice than using pins, but I can keep all my arrows inside the 10-ring on a McKenzie deer out to 30 yards, or 40 on a good day. Can't aim that way with a whisker biskit though, because you have to judge your gaps off the point of the arrow.