Most of us probably use Garmin Pilot or Foreflight or similar apps to do W&B but recently my exp kit supplier provided an Excel spreadsheet for that plane. I just came across a similar Excel page that can be easily edited. Maybe other guys have links to other W&B options. Hopefully it helps somebody out there. Look at the lower left footnote for the one that can be edited. http://trumpetb.net/alph/index.html And here's a version for the early (like 1953) 180. http://trumpetb.net/alph/wb180.html
I built one into my log book but what I did was figure out the four corners of the envelope and what I had to do to get out of CG and it's almost impossible in my plane to get out of CG. I will go over weight before I will get out of CG. So I pretty much never do a weight and balance and because I have to have 200 lb in the baggage area 600-lb in the backseat and 10 gallons of fuel to be out of CG
