Like any boat that is 25+ years old, you need to do a proper inspection before making a move on it. If you are not confident in your boat inspecting ability, then a certified marine inspector would be a worthy investment. Some 1988 boats will have damaged core areas that could be expensive to repair, and others that have been well maintained will be completely solid and ready for another 25 years of service. A thorough inspection now may save you many headaches in the future, and may find you a nice boat that will provide years of enjoyment to you.