short soaks are 2 1/2 hours, if pulling twice.
If you are learning an area, I suggest 2 pulls a day to zero in on the prawns, they can be finicky.
While the traps are on the second soak, do water changes in the prawn bucket till the water runs clean, then pop heads and package. My second soak is sometimes longer depending on how many I need to limit.
My second soak always out fishes my first.