I agree that there are often too many walk-throughs
and too much "teaching"
by the caller. At that point the most professional thing to do is to
apologize, choose a simple dance, and get people moving quickly to lively
music.
I'm not sure that after 2 walk-throughs the best bet is to switch
dances. Unless you've got something you want to run in that situation
without a walk-through, you're still not getting people dancing
immediately. If you're trying to run a very complex dance, maybe you
need to bail, but hopefully you're not doing that to newcomers to
begin with. If there's one trouble spot after 2 walk-throughs, and you
think the might be fine with other people, maybe just have everyone
take hands four, walk forward a couple, walk forward a couple, take
new hands four, and start the dance from there.
--
Luke Donev
http://www.lukedonev.com
Luke.Donev(a)gmail.com