Boiling animation loop switching via transitional animation....

Hi,

and please excuse me if Im just being thick. I've created puppets from scratch and am using boiling loops of 3 frames for holds in any position of hte main character to give it some life. My problem is how to switch out of one loop and play a transition animation to the new position, and then to automatically for it to sit in the new position in the new loop. I think I understand swap sets and triggering, but am not getting how to do this in an elegant easy way, rather than some ugly fix with multiple layers, with invisible frames in...  so yes I probably am being thick but please let me know if its possible.

cheers alan