I'd love to see your setup and how you attached the fin. I've thought of doing something similar, but instead of a fin, I figured the easiest way to steer the f

I'd love to see your setup and how you attached the fin. I've thought of doing something similar, but instead of a fin, I figured the easiest way to steer the frisbee would be to bend the disc either up or down. Depending on spin direction this should, at least according to my theory, gently steer it left or right. A single actuator mounted to the center of the disc, pushing or pulling on two points on the bottom lip would be all it should take. Intuitively I think this might also eliminate the effects of the asymmetric lift torque since it could continually bias which side of the disc has more lift based on speed, rotation frequency, and angle to keep it balanced.