anyone got any thoughts on this prop guard http://www.iboats.com/mall/?prod_id=668 i was thinking of getting one seein that i usually bend up 2 props a year from small hits in a shallow river{vermilion river} that my boats is kept in and have hit just small stuff just enough to bend a fin or 2 i was wondering if they work and if they make them for merc 260 i/o thanx in advance