Yes, it was really just an ILS set on the rocks. The "aiming point" or rather the "point to miss" was known as the "Chequer board". It was painted on the hillside in dayglo and white. On seeing that, it was time to look to starboard and think about the visual approach. It had to be done this way because of the alignment of the runway and the hills to the north.
Forgot to mention, there was a series of very bright white lights set in a curve, some on posts, some on high-rise buildings, provided to help you find the runway.
I was based out there for 4 years and NEVER heard the METAR go below minima, irrespective of the real "actual" which was interesting.....
If you PM me with an email address I could send you a scan of the plate, which I kept for posterity and to scare my kids.