RE: Aeromarine cat 18
No bigger than a .21 for that hull
The Zstrut is experimental, nothing wrong with Aeromarine hardware. I would be running one if my order came in right. ,got 2 rudders no strut. A nonadjustable strut is risky, yes . If I'm wrong it won't be the first. But if I am right, You seen it here first. like HR said I do like the steering/ease, fun to run ,the setup was easy. I could of used a old Marine Specialties strut,Heavy weight wise. They have a back plate with 4 treads. The new radio box is being built now .