Think you got problems? I found an old post in another forum - someone was complaining about the lack of choices of pusher props for electric motors.. okay then..
Realy???? Put the prop on backwards and switch 2 wires, the motor reverses direction. Kind of like an over-prime in our world but it actually runs good.
I'm thinking cutting down an apc is my best bet. They tend to be thin anyway. I looked at the 3 blade, but thick blades and they have the famouse Cox "2 speed slush box tourque converter" effect being so soft. Not sure the auto feather is what I need for this.