hey guys I have a 1998 wellcraft 175 sx excel with a 3.0 volvo engine and volvo sx cobra outdrive Iam trying to get more top end speed I have a michigan wheel 14/1/4 x21 prop my hole shot is ok and it takes about 10 seconds to plane my top speed is about 41mph by myself and about 37 to 39 with passengers or towing would like to get in 50mph range is there anything I can do.