I think that it is great that you want to take your boys fishing. I wish more dads would do so. However, I don't think I would take kids that young to the falls, especially if you go by yourself. It is hard to keep track of boys that young, especially if you are fishing also. The falls can be unforgiving when they are running any water through the dam. If you want to fish there, I would go there by myself first and see what you think. Maybe someone can chime in with some local ponds or small lakes you could take them to. Good luck!