@cd i am a few of lucky commercial divers who finished my course after oil price crash but somehow manage to secure a job without too long waiting time.however,6 of my coursemate wasnt so lucky n i think hv given up commercial diving for good.few factors contribute to this issue actually.n in one way or another these factors is related to one another.cheap oil price=stop new exploration=not much new job created=not much demand for divers...which gonna make competition stiffer where u gotta compete with extablished n experienced divers and also the flooding of oversupply of new divers(almost always lured by big salary promise without really understanding the water they just dived into).
but fear not for there still a way.if ur fire is still burning n willing to put in more woods to brighten up ur chances,u can go for CD course,then get urself DMT cert..and then pour in some more fuel into the fire by getting urself a CSWIP 3.1U inspection ticket.that way ull be better equipped to take the plongee..
as for the other non-diving related course,i dunno how it will help with the securing of ur first few jobs.im almost sure if u take those courses,ull find it handy n got a chance to apply them knowledge into your diving(or much more importantly your on deck perfomance).its a good thing for a diver to be an all-rounders n multi-talented/skilled.
n since these two additional ticket conna cost u quite a handsome sum of ur hard-earned money,maybe u can broaden ur research n see what other "cheaper" alternative to your current plan.the wonder of internet make it so much easier to look for things if you know what u r looking for.so u better get busy.i think the best time to finish your course is when the monsoon season just ended n companies start looking for people for their project.
so,good luck to you(coz u gonna need that one too)