I’m planning how to trial a smaller version on our EFoils in the spring. For battery power, that bump is huge.
With the smol angry-pixie-driven (very quiet!) harbour pusher, i'm just looking at ways to not use up too many angry pixies. This one looks promising and can be 3D printed. Original props for that one come in plastic only, anyway, which is really good! Might've accidentally killed my rudder this year, otherwise.