Heavy hanging

Would hanging 20-30 pounds in weight working way up in weight if possible for 4X5 minute's per morning then all day stretch be enough to get gain's? I would bathmate in the evening for 30 minute's too. Thinking maybe 1 inch length over a year with a 1 inch plus girth, thank's!

You will definitely be doing something. Any pe will yield resultsacross many factors. I always write the routine, follow it and measure over time to determine an opinion.