Attachment of Floor Storage

Auntie M pointed out in another thread a lack of cross members for floor storage attachment, I am thinking of light storage only, clothing, bedding, cords and the like. I had planned to just glue and screw some strips to the underside of the floor and attach the box to that. Is this acceptable?
Thanks Auntie M for pointing that out, I am trying to keep the weight down but also if I need to add crossmembers I want to do it before I paint my frame.
George
Thanks Auntie M for pointing that out, I am trying to keep the weight down but also if I need to add crossmembers I want to do it before I paint my frame.
George