"Mark Browne" wrote in message
news:hBHfb.680172$Ho3.145565@sccrnsc03...
If the holes are small you may be able to fill them with rivets. Drill
them
out to the correct size for the rivet and then drive the rivet
normally. It
is also possible that you may want to install a doublers over the
area - a
small patch cut to cover the area of interest.

There are some watertight aluminum pop-rivets. These may be an option
for
you.

Mark Browne


"Jason" wrote in message
...
I am upgrading my fish finder. the boat it aluminum.. how do i deal
with
the
old holes? Stainless steel screw with some sort of silicone?

thanks


In fresh water, for a trailered boat, sheet metal screws and 5200
sealant or eq. is fine. In fact on my old boat, tub and tile silicone
worked fine.

Salt water or polluted fresh water that is highly conductive may be
another story.

del cecchi