I'm not a fan of holding the ball or running with it before
throwing it, but I think all SHOTS are fair -- dejada, picking
the serve, anything that's legal.
It's a high risk/high reward play, but some people need to do
it. The two best I've ever seen at it, Inclan and Zulaica, were
natural left-handers. They were at a natural disadvantage, so
I would guess they both knew from the time they were kids it was
something they HAD to do to even the playing field.