Numbers

[McGillicuddy]

Roger that.
I think the black max/diamond is actually 13-3/4" diameter in the 15p but otherwise those are all solid. I think it's probably the best economy prop available for these hulls.

I think the Trophy is a stainless 4-blade and would do fine. Any boat shop would likely have a used black max/diamond available to try. Have you asked around or are you just too far away from shops?

Yamaha also has a semi-cleaver shape that would do fine but I think the the merc quicksilver has more blade area...