Two more concepts should be included... acceptance/rejection.
Acceptance can also cause a POC value to change. This can then be used as a criteria for continuations.
Rejection of POC and/or peak pricing is easily understood, and carries the possibility of a subsequent changing of POC value.
Changes in POC values should be noted as to the direction of the change... another criteria for ongoing analysis.
Acceptance/rejection also applies to pockets as you are calling them. To better understand that, just remember a pocket is surrounded by 2 peaks... acceptance/rejection is applicable 3x in these areas.
FWIW, I prefer the terms peaks and troughs. Troughs are more interesting imo.
But that's me.
Carry On!