For some reason I had this picture of a couple of screw holes that
held a transducer to the rear transom. You definitely need to build a
plug that fits snuggly into the hole. Use an epoxy resin to fasten it
in as opposed to Polyester resin. Epoxy has more strength and
elasticity. West System or something from Tap Plastics will work.

On 30 Apr 2005 07:21:15 -0700, wrote:

Dave, Don't follow the plan of basilk or David of just putting a plug
in the hole.If the hull flexes and it pops out or you scrape a rock and
it pops out or it just pops out from water pressure, most likely you'll
sink with your bilge pump pumping. Both sides of the hole need to be
ground back in a taper and resin and glass fabric on both sides used to
seal the hole. Follow the directions on the site Jim C. supplied, the
third category, High Risk, example 8, and you will be doing it right.
If you know what you're doing and have the tools and materials you
could do it in an hour or two. Sam