A crane could do it but rigging it would be hard and dangerous. I wouldnt be surprised if they wrapped a cable around it and dragged it back over the edge with a normal tow truck. Cheaper to destroy the bike than pay for the crane (as long as it stays out of the water).I wonder how they can recover the bike without damaging it or having it drown underneath....
Crane?
Wow. Definitely not going to win rider of the year. Goes through an arm and then lays it down before going over the edge.
I wonder what the safety arm looks like from the rider's perspective.