The northbound speedtrap is usually between Sucat and Bicutan. The LIDAR operator and one or two spotters baking in the mid morning sun.
If you're clocked over the limit, they radio ahead to the apprehension site where Toll Plaza B once stood at the intersection of Skyway and C-5.
On the southbound lane, they lie in ambush behind the bougainvilla bush where Toll Plaza A used to be. They radio ahead to the main toll plaza or Bicutan exit if you are over the limit.
They are usually there morning until 10 or 11am. Haven't seen any at 5 to 6pm. No guarantees though, so be careful.