If you run a SS prop and hit that (and it’s already destroying aluminum props), you will destroy your drive shaft. I wouldn’t do a SS for this reason in those conditons. Better and cheaper to fix aluminum props. If you are still going to give it a try, consider the flo torq hub above that Jack shared.Thanks Jack. The boat lives in Homosassa, Florida (shallow river w/ hard bottom). The limestone bottom just destroys Aluminum propellers.