
Ok handy folks--ehem Cappy-- Any thoughts on how to fix this? Wish I could say I was doing something fun

As you can see the seem of the board ended about 7" from the floor joist. No sub floor.
My only thought was put a piece under the end that needs support and screw it to the boards on either side of the hole. Then fit the broken piece in and screw it down. Using the breakaway screws so there isn't a line of screw heads on the floor.
Thoughts?