The problem is also that some rigs have 3 names, for example on the SNS the Viking 'P' is also known as 'Loggs" and "North Valiant" so when you see the name on the deck it is not always what you are expecting, and if you are unfamiliar with the area.........
I landed on one today that was the {rigname}-B, but on the deck it said {rigname}-DL, and it was only because my co pilot was familiar and he knew it was the same place.
How about the Audrey-W known as WD and the and the Audrey-X known as the XW. These names are set to trip you up.
In Aberdeen 10 years ago they had the 'Borgny Dolphin' and the 'Borgsten Dolphin" on similar radials at similar distances, also waiting to catch you out.
I think the crews are very professional that despite these traps, very few wrong deck landings occur.