Hello -
I realized I have another compromise option, so I did a Paint Shop mockup :
Because I have rear wheel skirts, the pointy top would be at risk of hitting the inside of the skirt. The following option would be clear of the skirt. The way things are connected, I think it would still be stable. This is also a version that could be left on during visits to my "Just Tires" store, the auto repair shop, and changing a flat on the road. The wheel is fully accessible for removal. I could still make a center-cap cover with a center bolt to cover the bolts on the center cap.
CarloSW2