Hi new to the forum and new to the "restoration" aspect of boating. I recently purchased a '89 Baja sport 190 from a gentleman who had to move because of work and wasn't able to complete his vision. I plan on restoring/making the boat my own. Im replacing the floor which isn't a problem but what is are these giant holes in the side of the boat! The previous owner planned on side exit exhaust which is cool and all but for me the cons out way the pros. Im need some direction from people with experience in this area as to how to proceed in filling these holes. Any help is appreciated. I attached a photo of one of the holes. (one on each side)