My shortest would have been around 18 minutes at the Criket my last visit, if I hadn't had to wait an hour for one of the 3 dancers I was interested in to be available.
Also what I posted as my shortest visit to only one club in one day. My shortest visit to a single club was around 20 minutes, but was part of nearly three and a half hours of club hopping in Tampa. I had spend a little under and hour at 2001 Odyssey and got a few lap dances but the talent was a bit week and wanted too much for extras which was available. I had other plans for extras, so then drove across the street to Mons Venus and got one 3 for 50 special from one dancer, a good dance too but I left after about 30 minutes since it was time for dinner.
I ate at Columbia then drove to Scarletts, but the club parking lot was practically empty so I drove back to Mons and spend another hour and a half between the two clubs. Decent dances, but no extras.
It was now around 10:00 PM, so I drove back to Scarlettes, walked in and immediately a girl next door looking blonde with large natural tits sat down. After a short conversation which lasted at most 5 minutes, and consisted mostly of have I ever been to Tampa before, had I got dances anywhere, and if I understood how things went there, we went to one of the regular dance booths and about 15 minutes later was out the door and gone quite satisfied, having been in the club at most 20 minutes.
My plans the entire day were visiting several clubs in Tampa with lap dances and extras only a secondary consideration and ending the night at Scarletts on a bang. So while my end goal was extras at Scarletts, my entire visit for all clubs was 3 1/2 hours, but I was only in Scarletts for 20 minutes. Which may or may not count.