I have a 1994 75 HP 3 cyl Mariner with a broken/worn skagg. I have seen various types of skag guards made of various materials. Some of the products claim they can be used to repair as well as protect the skagg. Does anyone have knowledge of these devices and do they work. My skagg is broke on the trailing edge about 3 inches long by about 1/2 to 1 1/2 inches.