Hunters not that lightweight..
..if you compare them to Beneteaues, Bavarias,etc. , you will find them heavier than some and lighter than some..Ability to withstand harsh weather and compatibility to offshore/ocean riguers, has little to do with plain weight ; it has to do mainly with structural integrity and ridgidity of boat' main components : hull ,hull/deck/bulkheads, rig ,keel and rudder, hatches and openings and to some limited degree can be estimated by comparing ballast /weight ratio , dispacement/lenght ratio, and stability curve along with general underwater profile ,to other boats one like to consider.In general ,Hunters are no better or worse that othersof same mass production modern well-known GRP gender..( of similar price level..) main difference being of style and design .(well..and rig..but my personal view is that it is going to change back to more 'regular' in not very far future..)They are not racers nor 'Heavy duty' long distance cruisers ,..but like most of them ,somewhere in between..and in my opinion Hunter does it quite well..