Note: several of these vessels were sold on 24 June 1921 to scrapper Joseph G. Hitner of Philadelphia, PA.
http://www.navsource.org/archives/12/01idx.htmThose sold off to the private market were pretty beat.
So, we're going from warship to pirate/smuggling vessel without much documentation on the specific ship and only what we know of rum runner tactics to guide us on what *should* be considered with this scratchbuild.
1) No guns. 2) It's gonna be Navy grey (and most pics of them show varying levels of scruffiness) 3) bigger engines removed.
The tactics of the era dictated that the shuttling craft pick up their cargo from larger ships sitting on "Rum Row" (originally 3 miles off the US coast, later extended to 12) and then run the booze in to pre-arranged meeting spots on shore - this dictated either speed or stealth.
Since we'll assume the Kingfisher had smaller engines (or just retained one of it's originals), stealth it is (which goes along with the Navy grey paint job). All ordnance goes away.