Sailing things right

I need more ideas. :)

Sea trial on a flat water ended up successfully, but the compass now is too funky. Foil hats aka "Faraday cage" doesn't help at all. Even properly grounded.

Installed couple of magnetometer sensor reading apps to the phone and found that the place chosen to install the compass is the one with the least value within the boat.

So, everything should be fine but it isn't.

Hell, I'm tired of this shit.