I think my son might just be a natural sailor. I've had a few clues...when he's on the boat, he waddles directly over to the backstay line and starts pulling on it; the first time he saw a cam cleat he tried to get his finger stuck in it; and whenever I pull the "new" spinnaker out in the kitchen, he starts playing with it and stuffing it into its bag.
Unfortunately, he also might be destined to be a model. As soon as I pull out the camera, he heads directly for it, confronting the lens as all good models are taught. So, the closest I have to a picture of him playing with the spinnaker is when he has just decided to leave the nylon mess alone and head over to the camera. It's impossible to even sneak up on him as he has a sixth sense for when a camera is around.
So, for now, this is the best I can do.