I've owned several ski boats in the past, and currently looking for another. Boats will have issues and things will happen, but it seems like there are a lot of used boats, that are not that old, that have new engines. What is this likely from....not maintaining, winterizing, rough usage, etc? Just wondering if it is the owner, or if there are issues with newer boats/engines now, and if I need to look out for anything in particular. Thanks.