IMHO: Anyone who exposes a young child to an protracted engagement of fishing like a charter fishing trip is asking to turn that child against fishing; because more likely than not, the child is going to be bored, hot, cold, windblown, sunburned or over/under corrected. Due to this reason and all of all of the good reasons already listed... I would agree that the minimum age for 1/2 day trip should be 10 years of age and an all day ship should be 12 years of age. I would also have a written policy that an unruly child constitutes grounds for the trip to end and the fees would not be refundable.