Thanks guys, I still haven't decided if it's any use to attempt the dual use the VHF radios as "marriage savers" type walkie talkies. Off Shore on the lowest power setting on un-monitored channels like 68 we're probably fine, however if anchoring/mooring we'll be near enough to shore stations that we might get picked up. Transmissions like "reverse, and a little throttle" is probably abusing the VHF airspace and interfering with other activity.
I think bluetooth earpieces make more sense- also are smaller and cheaper. Dan
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