How do I stop the weather router sailing below a True Wind Angle of 160

Using a computer and logging into your account at www.predictwind.com.

Head to Weather Routing > Sail Routing

Select Routing Preferences.

If you are using a particular Predefined sailboat polar, you can copy it across to Advanced.

Using Advanced, you will see a table format.

If you do not want the router to sail lower than a True Wind Angle of 160 you can assign a 0 boat speed value to the True Wind Angles(TWAs ) lower than 160.

Here you can see TWAs 160 with Boat Speed 0, this should stop the router sailing lower than 160 TWA.