Rules for Logging Glider PIC Time

I'd like to ask for some feedback on how your country deals with
logging PIC time in gliders to help me with clarifying the rules here.
Acting as PIC (the one and only legally responsible pilot for the
aircraft) is one thing but logging PIC time is another animal.

My interpretation so far for e.g. the US is:

Pre-licence
- you log dual instruction time when flying with an instructur before
solo/before passing the check ride
- you log PIC time when flying instructor authorized solos before you
achieve your glider pilot licence (or certificate as it is called in
the US

Post-licence
- you log PIC time when flying alone as a glider pilot
- you log PIC time when flying dual while receiving instruction by a
licenced (and current) instructor - e.g. prep for commercial licence
check ride, BFR check flights etc.
- you log the total flight time as PIC time if you are acting as PIC
while flying dual with another licenced (and current) glider pilot or
passenger
- as a P2 glider pilot (licenced and current) flying with a P1 glider
pilot (acting as PIC and therefore licenced and current), if I, as the
P2, are the sole manipulator of the controls lets say for half the
flight, do I get to log that time as PIC time?

Thanks in advance,

Markus Graeber
Aeroclub de Colombia
Gliding Colombia/Vuelo a Vela Colombia