I am the owner of a Hunter 310,1999.Recently I purchase a Zodiac Fastroller 285(lenght 9' 4", 73 lbs) and a Mercury 6Hp (55 lbs).What is the best way to install the motor on the port railing and to attach the dinghy to the transom? Transom mount weaver Davit? I am only sailing in river and lakes. Thank you