hi guys. i am new here and to boating.. my dad bought a new boat and gave his old one. it is a 1974 formula 200 thunderbird. it has a 351merc in it that he swapped in a while back. my question is what are these hulls capable of speed wise? the boat only does 35ish at wot.. that seems slow to me. any info on this boat? i can find anything by just searching. thank you for your help in advance guys. thank you brian.