One big advantage to assembling your paddle with hot glue....
I take the blade off and put in a blade cover, then tape it to the bottom of the board, hosel forward, following the nose curve.
Handle in with my clothes
The shaft in a paddle bag taped to the top side as it drops down, just above the rail
As long as there's a hair dryer at the destination, you are good to go.
Don't forget some glue sticks for reassembly