Dave,
I agree 100% with your process. I'm left handed and I take my time just as you do. Time was that PA had a 50 per day Panfish limit. As a artist living off of what I caught Bluegills and Crappies were a essential part of my diet. Filleting 50 fish was a real job but well worth it. Crappies are like butter to fillet. Bluegills are much tougher. I use 3 Rapala (have found none better) knives and strop often to keep the process going at my slow pace. I freeze some filets in Spring Water and they last a very longtime. When thawed they appear and taste fresh.
Now in my Geezer years I C&R almost all the fish I catch while I fly fish. The Bluegills and Rockbass in western NY can be really large and damn fine fishing with poppers. There are size limits thank goodness that some folks adhere to and others do not. A 9" or better Bluegill is a mighty fine fish in my world, enough for a Sangwhich....
Best regards
Vince