As to rig approaches at night then I, personally, don't see the problem. As long as the flight is well briefed and one of the pilots is experienced there is no difference in a rig approach than to, say, a tricky confined area landing or a night deck landing.
The main problem is that briefing 15-18 landings 6 hours before is not always particularly effective. Secondly in certain aircraft - it doesnt matter how experienced you are, if you are sitting in the opposite side to landing, there is nothing you can see at all as to what reference the other pilot has to the deck. With a 60kt wind, a x-deck landing is not an option!