My son and daughter both grew up on the lake operating boats with us onboard of course. Both got their boaters licenses as soon as they were old enough. My son's first job was at the state park near us and he drove the jet ski to work since he didn't have his drivers license yet. Both worked at the Boys Scout aquatic base on our lake teaching skiing, wakeboarding and wake surfing so I was lucky they had the chance to be responsible for someone else's boat including cleaning and some maintenance before taking ours out with their friends. Only issue we have ever had was my son hit a submerged log and dinged the prop while teaching a bunch of Italian guys from his work to surf. I feel more secure when they are out on the lake vs driving on some of the roads with the all the distracted drivers out there.