permaculture

[tom <tom@honeychrome.com>]

I've come across a couple illustrations of a 'two-person shovel' in  
permaculture texts.  Is this just a 'regular' shovel with a cord with  
a handle tied to it, or is it a specific tool?  Googling doesn't come  
up with much.  I have a considerable amount of diversion ditch and  
swale digging to do and anything to make it easier would of course be  
appreciated.  Suppose we could try the cord-and-handle thing, but  
seems like a second rigid handle would maybe be more effective.   
Anyone have any info, etc. on this?
Thanks