IMO Unthinkable / unreasonable due to safety and pollution reasons.
If you have a family, you'd better travel to Benin, Togo or Ghana where the crime rate is not as high.
There used to be this possibility in Lagos a few years ago...
called the Tarkwa/Takua/Taqua Bay mentionned here...http://www.kiteforum.com/viewtopic.php?t=2317405&p=234939
The access is only by boat. So, so long you can let your car in a safe car park ... http://locations.splocs.com/kitesurf/loc/tarqua_bay.html