I Guess I have a few kid stories:
My first born crewed for me on the Shark Cat in 1966 (about 10 years old) and we won our first trophy.., 3rd place in the North Americans. I remember I couldn't go up to pick up the trophy because I was all weepy and unmacho. <img src="http://www.catsailor.com/forums/images/graemlins/tongue.gif" alt="" />

Same kid in 1970 crewed for Stan Woodruff in the Sharks when we tied for the Nationals.., breaking in favor of Stan and Dave.
Dave is still sailing.., won the F16 Nationals two years ago, 2nd in the Wave Nationals a few months ago, and loves to sail when he has time and money to do so.

The second eldest, Todd, was a very little guy. At the age of 12 he looked like he was about 8.
It was so funny. Here we are sailing along in the single-trap Tornado and the hull would rise and he would get out on the trapeze.., all 80 pounds of him. I thought that was pretty ineffective, so I trained with him all summer to helm the boat in preparation for the Tornado Worlds in Toronto. I would start the race (he was too timid at the start), and then jump on the wire to crew and trim main and jib while he steered. I would encourage him to just keep the windward hull kissing the water. He did a great job.
In fact, we took a 2nd place in one of the races against some really hot competition and were in strong contention. A day or so later, the wind blew the warm water off the top and the freezing water came to the surface.., that was when we had to rush him to the hospital for exposure.
The interesting part was that many of the top sailors saw the idea of putting the heavy guy on the trap and have the little guy helm.
One such person was Rick Taylor of Taylor Sails (the leading sailmaker in those days for the Tornado) who was about 6'4" and well over 200 lbs. He had this little scrawny, skinny crew. He told me, "Boy, you reallly have the right idea."
So, he started having the scrawny, skinny little kid helm while he crewed.
By the way, the scrawny, skinny kid was Randy Smyth.

Todd sailed most of his life and was a captain.

Stacy was a great crew as well.., and believe she was around 12 when she really started racing. She was great. After all she was taught by the best crew I ever had -- her mother, Mary Wells.
I will never forget the time we were racing at one of the Miami YC events and we had the lead going into the last beat to the finish. She was so anxious to get out on the trapeze that she jumped out a bit early, hit the mark, and we had to do a turn. She cried for an hour.., tough, competitive kid.
Unfortunately, her life led her in a different direction and no longer sails, nor even has access to any water except from a faucet (mother of four very young kids)

And finally, my grandson. We don't see much of him since he lives in Ohio and we live in Florida. But one summer when he was about 7 he crewed for me in a local yc race. We had the lead around the leeward mark on the Nacra 6.0. As I sheeted in to go to weather the hull began to fly somewhat. I got out on the trapeze and it stopped rising and the boat squirted out quickly.
He looked at me in wonder and exclaimed, "Grandpa! You saved our lives!"

Rick