if you fit the service tube through from the bow, the control rod goes down this straight to the bell crank, also your wand control lines can use this tube to enter the boat cockpit (very neat). aside from thinking about the best materials that fit with your wish, be sure to deliberate on the metal roof cost. the look in the eye of jesus flustered and confused him. we made it into st. louis by early afternoon and went straight to the st. louis zoo in forest park. ruined vacation but they will always have a story to tell. 