In GA flying as part of flight clubs, how do you usually number the flights logged in the aircraft logbook? At my local club, they increase the number by the amount of landings performed. So for instance, you may have a single flight with one touch-and-go, one full stop landing. The line in the log book would read 10,787 - 10,788 for two landings.
Is this common practice, and why? Would you not usually number every entry through one by one?