We are repowering our sailboat with a Beta 30 engine.  We currently have a Flexofold 2-blade prop, 15RH11.  If we want to re-use our current recently replaced hub for a new 2-blade prop, we have to go to a 16x12  blades.  I keep seeing online that the Catalina 36 doesn't have space to go bigger than 15 inch diameter, in which case we'd have to move to a 3-blade prop and get a new hub (2x expensive).  Can anyone confirm that the online chatter about 15" props is accurate?

Thanks for any help!