Making A Boat Floor How Would I Attach A Seat/bench To An Old Fiberglass Hulled Fishing Boat?

How would I attach a seat/bench to an old fiberglass hulled fishing boat? - making a boat floor

Edson I have an old 16-foot boat was the captain of a fiberglass fishing boat with 2 chairs. I want a place on the boat to take children to add fish, but I'm not sure how to connect the chassis out of wood in connection with (I think to do) fiberglass boat on the ground. Has anyone any ideas, suggestions, etc. I think I could frame a wooden bench on the floor with fiberglass / resin basket, but do not know how. Is there an easier way?