I find that my shooting suffers when I shoot at any of those bright dots on targets. I am much more accurate when I shoot at a bare target (bag, block, foam or what ever) and pick a small "blemish" on the target face. For some reason those flourescent orange and yellow target faces really throw me off.

I figure that animals don't have flourescent dots painted on them and aiming at a "blemish" on the target helps me pick that "blemish" on the animal when the time comes.

However, I aim directly at the "blemish" on the face or when I do shoot at spot targets I aim directly at the X ring.