Moody 419 Boat Polar Performance

[Masterplan]

I have a Moody 419 yacht ( http://www.moodyowners.net/Moody_Archives/30_boat.htm )

I am looking to use the PredictWind.com weather forecasting site for trip routing.

One of the inputs that is required is the Boat Performance Polars.

Does anyone out there have performance polars for the Moody 419 or something similar?

The PredictWind site lists some predefined Boat Polars including Cal40, Class40, Swan42 - any ideas which would be the closest to the Moody 419?

As an alternative the PredictWind site enables entering maximum speed achieved in 15 knots wind speed and moderate waves for

1) Upwind VMG

2) 90 degree boatspeed

3)Downwind VMG

I don't have VMG instrumentation. Any suggestions on the VMG that I'm likely to achieve

Thanks

Darryl