On either stabs or subs, taking a Blaster underwater is like hitting a wall with the buoyancy and wide nose. Doing a fakie sub will give you a smoother entry, but it doesn't look as impressive.
Are you talking about surf or flatwater tricks? On flatwater things like tailstands and nosestabs aren't too hard. Just takes a good hop for the stab. In the surf you can pull off rolls and backflips with the right setup, plus pretty much any moto-x style tricks you can think of.