The electric knife is fast but a very sharp manual knife like a rapala will do a better job. Guides use electric because they are cleaning limits daily. If you want to really enjoy those fish you will need to trim all the red meat off those fish and soak them overnight in some salty water. Put a couple tablespoons in the water. My wife really does not like fish and is very picky but she eats the fish I catch because I meticulously trim the white bass and make sure to get all the "fishy taste" out.
If you worry about wasting the red meat your dog or cat will sure appreciate it if you boil it and add it to their food. The rib meat...I just bury it with the bones in my compost pile. There is waste in any process.
All this said, I very seldom keep a limit of sand bass. 6-7 is about the limit for me and I try to keep them above 14 inches. It's pretty tedious to clean 25 sandbass by hand.
John 21:3 Simon Peter saith unto them, I go a fishing. They say unto him, We also go with thee.