When should I know to be in a triple threat position and when not to be
Alll the time, but I'd say especially mostly when you're around the goal whether in the 12 or the 8, especially because one of the components is to be ready to go to goal. You'll also need to be very aware for the passing component so you can see if any teammates are in a better position, or the dodging component to try to get yourself into a better position to shoot/pass. The last two would apply to anywhere on the field :), hope that helped!