Re: Over reliance on electronics
Idk I've been using GPS for years and its pretty dam reliable. Redundancy is I have navionics in my iPad for primary navigation, I have it in my cell phone for backup or for just days ailing, most of the people I sail with have a chart plotter on their phones and there are even ais transmit and receive apps for coastal navigation! Short of some massive solar event, nuclear bomb caused emp, or space war with the Chinese, I'm not that concerned about losing GPS navigation.
Of greater concern is the irregular updating of the charts themselves IMHO, esp after sandy...