Hi!

U can log however you want.
If you want to be legal, you can log it the way the FAA allows.
If you want to make airline and other applications easy, the standard logging procedure is to ONLY log PIC if you are the one who is responsible for the aircraft, AND, you will have to subtract all your instructor time for some applications, as they don't count it as PIC/SIC.

When you are solo, as I was in my multiengine jet aircraft, I could not count it as PIC, on almost every app I have filled out (well over 100). I was flying solo under the supervison of an instructor (sometimes on the ground), so I only get solo credit, according to the application instructions.

I didn't like losing all my solo and dual time, but this is Earth, so it is not easy. I also lost a bunch of flying time that I flew with my dad, which also ****ed me off, but too bad for me.

cliff
NBO