Welcome aboard. You might be interested in the
Captain to Captain forum if you haven't already noticed it.
Here is a FAQ thread on changing your username:
Changing Member Names There are plenty of reasons that a member might want to change their ScubaBoard username: They are reconsidering the wisdom of using their actual name in this era of identity theft and the dark web. They just came up with a great name. They want a name that reflects their...
scubaboard.com
@Wookie is one of the go-to people on name changes if you need any help. There are a lot of people that registered, never or rarely posted, and haven't been on the board of years — meaning you can hijack their name if you can't find one you like that is unused.
How did you get into diving? Were you a maritime professional first?