I think that common sense and experience should come into play in this situation. If a pilot enters the incident in the tech log then maintenance action has to be carried out. At a home base with engineering support it's not a problem but down route then use your common sense. If you knew 100% that it was only a glancing blow off the leading edge of a wing resulting in no damage then don't put it in the book. Any uncertainty at all and it should be reported in the tech log. Most airlines have a Chief pilot and a Tech pilot, ask their opinion.