Re: Hole in bottom of yamaha jet ski
clean the area with M E K solvent, repair with fiberglass matt from the inside first. cover outside with wax paper taped in place with metal tape over it, after it hardens remove metal tape from outside and wax paper, clean with m e k and grind area to a taper then repair with fiberglass matt, cover with wax paper and smooth it out let it dry and sand it , smooth it out with fiberglass body filler and sand it again then re finish it with gelcoat, if you can't shoot gel coat use a good automotive primer and sand it then shoot it with a good paint but the paint will eventually wear off.The hole will stay fixed though, do not cut the matt when you use it ,,tear the edges to avoid making any edge lines, tearing it feathers the edges. use a fiberglass roller over the wax paper when you smooth it out ,if you don't have a ribbed roller use something even a soft body filler spreader to smooth it out and remove the small air holes. makes it easier to sand and feather the glass when it hardens.
