Check out this site. It has excellent information on how to train the weave poles 4 different ways to eventually set you and your dog up for competition. It also explains how to target the entry and exit using a toy or other motivator when you are ready to send the dog ahead of you.
http://www.netscenes.com/cockerstudy/weave_poles.htm

To get the single-foot action, it is easiest to start with the poles set in a straight line but leaning out, so they form a V shaped line when you look down thru the line of them. Using the channel wires is actually the most successful method for teaching the dog an independent entry and to stay in the weaves without popping out at inappropriate places, but it has the drawback that it doesn't seem to promote single footing, perhaps cuz dogs don't want to push their shoulders into the wires (which are quite stiff if they're bought commercially).

Hi,

Channel weaves refers to more than just wires on the weave poles. It is actually 2 sets of poles that can spread out, or push together. You have two bases which fit together. Every other pole is on the left, the remaining poles are on the right base. You can pull the bases apart so that the poles are just two columns of poles, and the dog runs straight between them. This is the channel. You slowly start to push the channel together, and eventually the dog has to start weaving the poles.

The benefit is that the dog is already presented with the straight-up vision of the poles (vs. the weave-o-matic, where the poles are unnaturally tilted), and the dog is taught speed through the poles from the start. Speed develops proper footwork through the poles, and if you watch the top dogs, you'll see they put their left front foot through one pair of poles, the front right then reaches through the next, and so on. This is single-footing through the poles and is very flashy and efficient. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />