Micro-jigging means different things to different people - in Oz or NZ the jig and tackle weights are much higher than would be the case in SE Asia (< 1oz, often <14g). For this post when I talk about micro-jigging I am referring to my own experience which has been with very light tackle - I've mostly used 3lb Fluorocarbon or PE 0.6 (8lb braid) on very light rods. That said I think the principles are what's really interesting and they can be applied to many different areas and species with heavier or (maybe) even lighter gear.
The brilliant thing about UL micro-jigging (ULMJ) is that there is usually plenty of action so you learn quickly! I've racked up 8 species (and over 20 fish in a short session) in just one venue that isn't known for it's lure fishing (Kalk Bay). The potential in warmwater areas is huge, think Richard's Bay or Durban harbour. I managed about 3 trips in Durban using ULMJ techniques but lots of summer evenings at Kalk Bay is where I learnt the most.
My ultralight SW adventure started back before the internet - from 1991 I used soft plastics on 4lb line in Durban harbour and the Umgeni Estuary - got some good fish that way, big gurnards and most memorably a 70cm garrick on a clear Gitzit. I also got prodigal son, threadfin mirrorfish, sole, rock cod, snapper, perch etc. Then I moved onto SW fly fishing and fly tying which was a great learning experience - I fished South Pier a lot and got the usual mix of species - queenies, springer, kingies, bonnies, salads etc. Later I lived in Ireland and got back into UL SW - they call it LRF (Light Rock Fishing) over there. I caught pollack, wrasses, poor cod, launce, sea trout on small soft plastics and tiny metal vibe baits.
With all that in mind I feel that ULMJ is the most exciting UL SW method I've ever used and the potential in SA is massive. It may not be the best method to catch big fish but as a fun way of catching numbers and a variety of smaller fish I predict it will be hard to beat. I've no doubt the guys posting micro catches will get this point - many others will wonder what the fuss is about. Too each his (or her) own.