Soeties needs very flat water to be clean, unfortunately. I have been wathcing it breaking every day this week - althought the swell has been small, it has a long period so some of the reefs have been breaking.
You can drive past, but I think you will have a much better chance of getting a dive in at Cape Maclears or Paltboom in the pool area whch is diveable in quite big swell. (And I shot my biggest gallie there)