Thanks to all for the ideas.
Special thanks to Maia!
If anyone has insights into teaching diagonal figures to the uninitiated I'd love to hear them.
Ken
3-33-33 is not a good choice for introducing beginners to extra-4some expeditions. I've also found that a diagonal chain followed by a straight-across figure causes confusion.
The Young Adult Rose,and others, have a pass-through to shadow allemande which is doable.
Does anyone have some reliable key to unlock this mystery for new dancers, thereby opening up a whole new world!
Thanks
Ken