Is your tail part of the hip or abdomen body part, or a seperate body part? It kind of looks like it may span the hip and abdomen, if that's the case you're going to have some serious trouble getting the cr2 setup. The easiest way to do this is to create a replacement hip or abdomen with the tail sticking out. Then segment the tail. This will reduce the necessary CR2 hacking and make setting up the figure much easier.