"Darrel Toepfer" wrote in message
.. .
Dave Stadt wrote:

Actually a boat with 3 keels would be horribly slow.

2 are faster than 1, I'd bet 3 shallow beats a single deep one,
especially when it just has 2 in the water in a strong wind...

Shallow keels in general aren't worth much. The stronger the wind the
deeper you want.

Many have tried two but have not been successful. Two are good for
grounding though as the boat sits upright nice waiting for the tide to come
in. Keels are wings remember.