I think the key here is that most of these columns are not mutually exclusive. On a 3 hr flight, you may have 2.0 of simulated instrument, .4 actual instrument, 1.5 of night, and 3.0 of dual received and PIC.

61.51 is the best guidance we have for how to log certain types of flight time, but my best advice is to go to each column and put down how much of the flight fell under that category.