Sax,
You seem to have hit upon a conumdrum....CHC is short of pilots in Nigeria. Local efforts there to identify likely replacements seems to fall upon deaf ears.
CHC seems willing to transfer folks out or see them quit after a single tour of six weeks...or get their Candadian license and stay a few six week tours then leave....but seeking out Nigeria experienced pilots is not happening.
They will however recruit new out of the box coeys which will only add to the workload of the Captains while flying out of one of the busiest areas for helicopter operations in the world.
Perhaps some of the PHC guys from Bristow or ACN(CHC) will describe the amount of radio chat required to complete a "simple" flight at PHC. It rumoured to take about 66 radio calls for some flights out and back along with the other cockpit duties.