@gar hi,...
My memory of SW in during the year of high school that I spent in Honolullu was that it was relatively slim pickings. Not a total bust, but I seem to recall that most of what I heard was from Asia/Oceana and fairly weak. Even though I'd lug my Halicrafters S-118 up with me to the rooftop deck of the 14-story apartment building in our complex. A spot where the ambient noise was next to zero.
What I did, however remember, was hearing a number of harmonics from K-POI (5kw ND on 1380), which had its studio and transmitter about two blocks from me, at the corner of Kalakaua and Ala Wai.