Maxcraft paddle

I have two old wenonah/maxcraft composit paddles made my Tertm INC. The handles are broken off and lost. Any suggestions on replacements/repairs.

Can you tell whether there is enough
paddle shaft length that adding a comfortable grip would do the job?

Are the shafts tubular? Then you could get some dowel of the right thickness, glue it into the shaft, and then attach a T-grip or a more comfortable modified T with a mortise and tenon joint.

I could send or link pictures of a modified T-grip attached to a tubular carbon shaft. But check those shaft lengths first.