Wave Static mode is for very special conditions where one knows where the surface will be and would like to specify a window about this surface - as well as the velocity cell positions.  If the surface position does not vary that much and one wants to draw in the limits of possible positions, this mode can help limit possible bad detects.

In practice, I find that I rarely use this mode or encourage the user to use this mode. There are several reasons for this:

1. There is almost always tidal elevation changes present; this makes it hard to specify measurement positions.
2. Sea state is variable making surface position hard to predict.
3. Deployment depths often vary from what or where you intend to deploy.

The standard mode, where the measurement volumes and AST window are automatically specified works surprisingly well. The secret to the success is that the AWAC always profiles for 60 seconds just prior to the wave burst, and here a good estimate of mean sea level is made as well as approximate sea state.

For most deployments, we would simply use the standard mode and stay away from the static mode.