Y'all got me looking at agility things!! Here's some links!
http://www.usdaa.com/ This one is my favorite, very professional, and they divide the dogs in groups.
http://www.nadac.com/ http://www.dogagility.org/index2.htm (much as we hate this word, I am certain there are lots of yorkies involved!)
http://dogwoodagility.com/jff.htm This is agility for fun's sake, not competition.
I don't think Wosie can do it, with the three pins in her formerly broken leg she may get pain from agility courses.