Paul Ames

I do not know how high the mast is but you might try buying some pvc pipe–grey is better as it has a thicker wall.
Figure out what length you need and glue them together for that length. Fashion a Hook from small diameter mild steel and file a point on the end of the hook. Duct Tape it to the end of the pipe you built and go fishing for you line at the top of the mast.