I use Dunlop Tortex reds (0.50 mm). I hold the pick at an angle that eventually shaves a sharp edge on the pick. I get precise control over the attack and the release.

Something very few players understand is that its the vertical motion of the strings that the pickups sense. The signal is generated when a string disturbs the magnetic field of the pickup magnets. String motion parallel to the face of the pickup causes very little disturbance. Only the part of the string motion that is perpendicular to the pickup face results in sound.

If you look closely at a vibrating string, you will see that its motion is a circular or oval pattern. Anything you can do to make the string move more up-and-down relative to the pickup will increase the signal produced.

Dragging a string sideways with a heavy pick and then letting it go, actually produces less attack than letting a string 'pop up' from underneath a pick that is 'shaved' across!

So now you know.