Carol Shepard on Tango-L mentioned something that I think is a good idea.
The thread started out about surplus followers and/or leaders. There is also discussion about couples who stay on the dance floor, through the cortina, for multiple tandas. Whether it is leaders "hogging" followers, or followers being too timid (to end a dance), or simply that the two dancers are really, really, really enjoying each other, it does present some problems.
In Atlanta - I was pretty good about adhering to my rule for the festival - one follower - one tanda. I say "pretty good" - actually I would say it was "pretty half assed" now that I think about it. I think there was one occassion when I wanted another tanda, but at least I had the courtesy to move to the edge of the floor - off the floor - and wait for the cortina to be over.
There have been times that I have missed dancing all together with a particular follower because she was retained/detained/restrained/constrained on the floor between tandas - she was never "available" to be invited. At least not when I was looking.
There is also the common courtesy of sharing. As much as I would like to dance the entire festival with half a dozen followers - I'll call it my festival sweet spot - I resist the temptation. It is a difficult temptation to resist. I am your typical "findsomethinggoodandstickwithit" kinda guy. So, I force myself not to ask women for repetitive tandas - at least on the same night. Is this stupid? As I write this it sounds stupid...
Anyway, you can check out all the debate for yourself on Tango-L.
Carol's idea was longer cortinas. She suggested up to two minutes long. This would, in theory, discourage couples from hanging out on the dance floor and "force" them to mix it up with other dancers. In other words, make it glaringly uncomfortable for them to stay out there for that long.
I have a few 45 second cortinas in my bag of DJ tricks. But I only rarely played them. I have some minute ones...a minute thirty...but I never thought to play them. I thought they would be way too long. I have always tried to stay in the 30-40 second range.
I may need to re-think that. That is, if I ever find another place to DJ, or get an invitation to guest DJ somewhere.