[GPSNavX]

I think some are not understanding what SailTimer is.

SailTimer is not a routing algorithm. SailTimer is a tool that will recommend a course (heading) and a target (speed) to an active waypoint. This course is based on wind speed, wind direction and the performance polars. SailTimer does not compensate for external factors such as obstructions or current.

In order for SailTimer to be accurate, the wind speed and the wind direction and the polars provided must be accurate. Polars provided by boat builders and designers make some assumptions: clean fair bottom, new and properly trimmed sails, properly tuned rig, and a displacement that is the same as the designed displacement.