How about one of these:

http://www.velocitekspeed.com/

We used them on a melges this past regatta and it was awesome. It basically is just a GPS unit with a very large display. Get a few of them in the fleet and you can replay the race on a computer afterwards. It's a great way to really improve your race management.

:: I'm going to replace Wildthing's meter soon (hopefully)
:: and I'm going to look into one of the transducers that
:: does not need a hole at all and can figure the speed
:: through fiberglass. I'm going to try and pair that with
:: a Tacktick receiver... should be interesting- and solve
:: the problem of the paddle coming out of the water while
:: surfing past 17kts.
::
:: Just an idea
::

:: -bryan

::
:: :: I've used Tacktick yachtmaster system for about 5 years-
:: :: the knotmeter paddle is extrememly prone to jamming
:: :: after it rains if lots of small sticks are around, and
:: :: if you aren't careful the through- hull can be damaged
:: :: and leak. You do need to pull the pin and lube it
:: :: through the paddlewheel upon occasion too. The
:: :: transducers
::
:: :: and through- hulls are easy to get from Airmar- and they
:: :: are great!(the help)
::
:: :: Dave
:: :: :: Nat,
:: :: ::
:: :: :: We have the TacTic wireless system on Moxie and have
:: :: :: been very happy with it. We did have a problem with the
:: :: :: "brain" portion and they immidiately replaced it, no
:: :: :: questions asked. It was also compatible with my old
:: :: :: transducers so I didn't have to change out anything. I
:: :: :: would recommend giving them a call to see if your
:: :: :: existing transducers are compatible with the new TacTic
:: :: :: system.
:: :: ::
:: :: :: Hope that helps.
:: :: ::

:: :: :: -Jason

:: :: ::
:: :: :: :: Hi -
:: :: :: ::
:: :: :: :: I need to replace the knotmeter on Elise - do you have
:: :: :: :: any recommendation for a good instrument set. I don't
:: :: :: :: know if there is a standard throughhull diameter, but
:: :: :: :: would love not to have to drill holes into the hull...If
:: :: :: :: it could be just drop and replace, it would be fabulous.
:: :: :: ::
:: :: :: :: Any pointers appreciated!
:: :: :: ::
:: :: :: :: Thanks!
:: :: ::
:: :: :: :: Nat