my understanding is that you wait for the TC to be in your favor until you sit down, then you play until the count is not in your favor and get up and look for a new table
i seem to have a problem with the number of people issue. i went last night and there was no available seats at any of the low-mid staked tables.. so i was forced to stand around, wait for a good TC, and then ask people if i could bet on top of them...
In two hours i had only played one hand and it was a bet on top of someone already playing ( i did win however, but later ended up losing everything i came with betting on top of someone at another table, count was even more in my favor that time but dealer had 21 )
To me, if I go on lets say a less busy day like monday, tuesday, wednesday, and just stand and watch the tables when there is way less people at the tables and in general at the casino it will seem way more heated if i'm standing in the same general area for hours waiting for a favorable count...