If you're looking for an adventure with your son that will make memories, start at the first bridge downstream from baldhill dam and hit EVERY bridge crossing from there south as far as you have time for. Gives you time for snacks and conversations between spots. Spend about 3 minutes hitting each corner of the bridge with a half dozen casts and then move on. If there are active fish there, they will hit most times on the first cast. Should take about 20 minutes at each bridge. That trip keeps the youngin engaged and excited without making any one spot boring. Good Luck and post pics!