[Billy1119]

I didn't want to imply the technology wasn't there to accomplish this, my point was more that when on my yacht, with the way the technology is currently as far as I'm aware, I "wouldn't want to solely rely on the GPS to keep me in place at night surrounded by rocks with the wind blowing 30 kts when everyone is sleeping." Even DGPS. But hey, that's just me. It is some awesome technology we have these days though, and I certainly wouldn't be opposed to using it during the day in reasonable weather... Then again, I have no real world experience with it, so just realize these are simply somewhat uneducated opinions.