That is exactly what I did - used the PDC which worked everything out for me on the fly. Using square profiles means that I get no benefit for the offgassing that would take place going from C-D and D-A where I am going from 15-5m and doing an effective stop at 5m.
While the depths I chose (from one of my own dives) make the dive no problem with regards to NDL, upping the depth to 25m means a decent deco build up (approx 10 mins) using square profiles (based on V-planner). Would be interesting to see a graph of tissue loadings from a petrel or similar for that profile - I suspect a substantial difference between it and the square profile.
Guess the point I was trying to make is that tables are great at what they were created for ie square profile dives but they don't provide all the answers to all issues
