I'm trying to figure out the easiest way to create a route that doesn't move off the Rhumb Line more than X miles.
I tried adding marks alternating marks left and right of rhumb and then set each mark to either leave to port or starboard.  I wasn't able to figure out how to display the rhumb line course at the same time so my marks tended to drift.
Q1.  Can you display more than 1 course at a time but only have 1 active?  I saw an always draw option for a Mark but not for a course.
Q2.  Or is there an easier way to accomplish this?

Thank you