My routes and waypoints need to be based on Google Earth/ Earth NC because the paper and electronic charts for the Sea of Cortez were made in 1873 and are not complete or accurate. If you are interested you can see what I have already done on line.
Go to the section on the right side bar and select San Carlos Mexico and zoom way in. All that stuff is mine and it took a looong time to create. Our new house is about two miles west of the San Carlos marina one row back from the beach near the jetty and launch ramp. I have a deal with Google and Earth NC ( Earth Nautical Charts) to publish my stuff.
On the lefthand sidebar you can select Trip and route planner and see a video of how it works. Yes, it is free.