I've been thinking for a while that it would be cool to have a GPS unit that displays my current and maximum speed while sailing my Laser. (For practice only of course; I'm sure such a gizmo would be illegal when racing.)
I just found the ideal gadget: the Velociteck S3. No other fancy GPS features, just a simple large digit speedo.
PS. If any friends or family are reading this please don't buy me this for Xmas. There is a 30 day return policy and I want to buy it at a time of year when I can give it a real workout and return it if I don't like it.