The app failed spectacularly on this trip. But I now finally have some hints as to what's going on. I still don't know how to reproduce the weird straight lines reliably, but I will add some more debugging info.
Sadly the app on the Pixel 6 has run into some issue that’s now preventing it from running. I’m guessing and iut of memory error. Brilliantly I just realized I should switch to one of the other devices and continue.
We got away from the dock at 11:30 and are heading to Osprey Marina near Myrtle Beach where Terry unfortunately has to catch a flight home because he has commitments. It’s sad because we really only got to sail the boat for a short while.
We went out to confirm what OredictWind was telling us and as predicted we've had 20+ kts on the nose towards our destination.
So it was decided to motor up the ditch.bI didn't realize how much I had learned from my time with Wayne. The channel markers are different and since I've done it before I was able to direct us to avoid all kinds of issues. The Bob423 tracks and coast guard depth surveys in AquaMaps make all the difference.