How do you search for member but don't their names or nicknames just know where they register area?

You can try searching the the introduction board to narrow down your search, often people put where they're from in there. You can also add 'site: northwestkayakanglers.com' and use google. Typically the native searches on these types of websites pass the search variable to a SQL LIKE operator which is boo boo compared to something like google.