A boycott will be pointless. Think back to preseason when the club sold every single season ticket. Those sales are in the bag so a boycott isn't going to affect that money.
We may lose some incidental cash like hotdog and beer sales and the ground will look emptier with season ticket holders boycotting but it won't make a huge difference to the cash available that the morons can waste.
Look how Rangers handled it. No boycotts, just made use of their attendance to show their displeasure. Pretty effective!