"Best advice is to keep and use a log and you won't have anything to worry about!"
I'll toss in my 2 cents on this one if I may. ALWAYS keep a good log book on your boat and post often, at least once an hour. Even if it's only to comment on sea conditions, location, etc. This is even more true if you've got your Master's papers.
If you ever get into a 'pickle' with the CG that is the first thing they'll ask to see. In court it's your main line of offence/defense in case of a boating accident/incident.
Interesting to see that required 'sea time' is now 180 days. "Back then" you had to document a full year.