“Persistent” line of high tensile fiber glass fiber blade features:
Prolonged side railings or ribs for increased thrust.
Deep angle of attack of fiber glass blade.
Over all total length of 39 inches (99.06 cms) for bigger active surface of fin.
Wider 9.5 inches wide (24.12 cms).
Longitudinal rubber railings for control water channeling and reduction of downwards thrust slippage.