And without a proper stripping and NDI you'll never find that crack that could kill you. The prop manufacurers have overhaul period specs for a reason. The prop is the most highly stressed part on the entire airplane. Centrifugal forces are enormous. It's why there are overspeed limits and inspections specified for incidents outside the limits. 10% over redline for a few seconds is a typical limit. It produces 21% more force on the prop. Contrast that with airframe loads of 280% over normal as a limit.