A non planing hull such as a sailboat will benefit from waxing as this
allows the water to flow over the hull with less resistance.
A planing hull such as a bass boat, speedboat, etc. will have reduced speed
due to surface tension of the water. Same principle applies to slick smooth
water vs water with a ripple or small waves. The more air you can get
between the hull and the water (assuming the prop stays in the water to
provide push) the less drag there is.
With a slightly rough surface (clean but rough) will break the surface
tension between the hull and the water and allow the boat to go faster.
This is why true speedboats / raceboats do not use a smooth running surface.
Most racers will actually sand the hull w/ 200 grit or so sandpaper to
create a texture to break the water tension.

--
Tony
my boats at http://t.thomas.home.mchsi.com

"cag" wrote in message
...
Wait a minute....

Would someone please explain this one for me?

How will making the bottom of the boat slick (waxing it) make it slow
down?
I've always waxed the bottom of my boats (about once every other summer),
and my speedo indicated I was going 3 to 4 mph faster after each waxing.

cag



"bomar" wrote in message
.. .
Waxing the areas of your hull that are in the water at planing speed
will
slow down your boat.
If anything you want to abrade that area.
As for washing the area covered by bunks.....the lake does mine for me
as
I
boat.

"JG Wall" wrote in message
...
I just purchased a boat and wish to clean and wax the hull. It is on a
bunk
trailer. My question is - how do I clean/wax the areas of the hull
that
are
under the trailer bunk supports and therefore not accessible for
cleaning
while it sits on the trailer, or do I just not bother with those
areas?
Thanks!