To be safe, guess zero. To stop a lot of damage, guess one.
With large ship boost and large ship barrel roll you can move however well **** you please, so you can dodge a bunch of arcs and just C-3PO away the one ship that gets to shoot at you.
You lose the greater offense of Kyle but you can elevate the shenanigans to ludicrous speed with C-3PO. Just one or two correct guesses of 1 are enough to turn the game around when playing Fat Falcon.