Hi new here and new to this boat. 1st outing ran the boat over a rockpile and tore out the rudder as well as extensive fibreglas damage. I have had the glas repaired and the new rudder assembly is being shipped from SC my problem is: where do I drill the new 2" hole in the bottom as there was no reference left after the carnage. I understand there has to be an offset for shaft removal but any help with locating the right position to drill the hole would be much appreciated. A photo from a similar model inside and outside would be of great help. Thanks Dave in Ontario Canada