use air compressor to blow out any water in surf ballast tanks

[brandboat23]

can someone provide a photo or video what ballast hose to disconnect to use air compressor to blow out any water in the ballast tanks for R6 surf?

[Norris_Boating]

Do you need to worry about it? The typical issue with water is that it freezes and expands and breaks lines and such. if there is just a little bit of water left in an empty ballast and it expands will it break something? Or are there water lines that need to be blown out.
I have never done anything with my ballast to winterize and have never had a problem.