I am looking at two different Hatteras Sport fishing vessels to possibly put into a charter sport fishing company. I'm looking at a 1979 53' Hatteras with tower. She has rebuilt 12/71 TI with approx. 500 hrs each What type of fuel burn do you think she would get at slow trolling and fast trolling speeds, as well as cruise speeds. The other vessel is a 1989 52' Hatteras Sport fish with tower. She has 8V92 TA 735HP with approx 1000 hrs each. I would like to hear your thoughts on which vessel may be the better of the two, taking into consideration the age of the vessel, fuel burn at different RPM's, the type of engines, HP of engines. Longevity of the engines, costs of the maintenance of each engine. Cost of a full rebuild of each engine. Thank you.