Doug from Murray's has convinced me that installing the port is the way to go as the through bolt is superior in strenth and allows for inspection etc. I've got the ports on the way, 4" dia. actually made for the front of an H14 but I'm told will fit the back of the H16. Obviously you have to be able to reach the transom from the port to start and run the nuts. Any idea on how far from the transom the port should be located??