You're definitely single pin picking. Picking or Raking isn't defined by the tool you use, just the function you use it for.
Single-pin Picking: The movement of individual pins up to the shear line by use of a tool.
Raking: The quick scrubbing of a pick over the pins, with the intention of causing some or all of them to set.
...I know a lot of people are fond of using the half diamond to rake a little bit, as it glides over the pins well...this works particularly well in very cheap tiny padlocks.
