Any Garmin users with Marine POIs loaded in the gps?

I have both a Garmin Etrex vista and a MAP76S with maps loaded in them.
If i install POIs again it will erase them so..

If anybody has the marine POIs loaded in their Garmin GPS could you tell
me if you see any bouys or navigation information for the East Coast of
Canada?
I tried loading the marine POI re-install program from the Garmin Website
and i saw so little that it would be uselss.

I know that the tide data is not available for E.coast Canada (Garmin).
Marine Aids to navigation may also be lacking for ECoast Canada?

thanks for any help.
rick