Thanks, I think I know which lagoon you are talking about. Looking at google maps, are you referring to "Pelican Bay" ?
https://maps.google.com/maps?q=Boca+...orida&t=h&z=15
If so, I would probably do the north side of that bay.
I've also been thinking about that lagoon on the west side of the island on the gulf. It looks like a small pass has finally opened up back into that small lagoon. At least that way, the family can enjoy the beach too.