Double dipping happens when someone wins a race overall, and is also given the prize for winning his or her age group. Races are inconsistent about whether this is allowed. I have benefited both ways - sometimes getting both prizes, sometimes getting "first" in my age group when the overall winner came in ahead of me (in which case I admit feeling my "first place" prize is a little tainted).
Now I'm organizing a race, and my question for you is: Should I allow double dipping in my own race, or try to give prizes to a (slightly) greater number of competitors?