Alternative designs from the last 30 to 40 years presented in Robin Listman vs. OMC (Outboard Marine) boat propeller injury trial.
Houseboat Propeller Regulation Proposed and Withdrawn by USCG: Analysis by PGIC
History of Boat Propeller Safety
Mitigating Boat Propeller Injuries & Fatalities Chart
Four Volume Review of the Boating Industry’s Boat Propeller Guard Product Liability Defense