Whitby 42 Brewer Sail Boats

Hello all,

I am getting ready to relaunch Akupara and have been doing some re-routing of lines. Currently I have 5 thru hulls about 18 inches above the water line on the port side, just above the top of the fuel tank. I would like to add another one but am wondering how many I can put in a row without reducing the strength of the hull. THe current 5 vary in size from 1/2 to 1 1/8 inch and are each about 3 inches apart. Can I add a fiftth to this row? should I change the height so it is not in line? should I increase the spacing?

Thanks for all the help,

Dan