Blaster planking is super beatable. People just don't understand the concept of Wolf planking so they don't kill us for it lol.
But yeah, I blaster plank a decent amount, you have to be very quick on your ledge invincibility and retreat asap or else... serious trouble awaits :x it also pays off a LOT to learn the spacing for a lightstep after a blaster from the ledge, or at least make sure you're at a good enough angle to semiscar if your opponent tries to edgehog.
EDIT: Personal favorite, blaster plank > lightstep > AD right away and get your *** to the opposite ledge, rinse repeat