Construction of these boards are robust to say the least. There are no bindings to speak of. And if that isn't insane enough, Webb now offers stand-up boards!
Of course, the biggest danger at hand is, well, the volcano. Though it last erupted back in 1999, it is still active. Tour operators work closely with the park authorities to monitor activity.
Would you participate in Volcano Surfing? Tell me via Twitter, @JerryJamesStone.