If you catch crappie out of good water, there is usually no need to add salt when you freeze them...especially when the water is cool. White bass, wipers, stripers or even channel catfish, and any other fish that may have any red meat in the fillet (after having tried you best to get all of the red meat out) are different. I like to take a container, add the fillets and water, ice cubes and then add salt. This will not only help to take that 'fishy' taste out of the fillet but will also help to firm up the meat!
Saw a very strange thing at a lake in Wisconsin once. This guy caught a mess of crappie. We also did very well but never saw him at the campground where the fishcleaning area was. He later told us that he liked to ice down his fish uncleaned, then when he got them home he would freeze them whole in batches of 5 or 6. Then when he wanted to eat some, he would thaw out enough for a meal, and then clean them! Don't try this at home!
the trick to catch that finnicky speck....
gently set the hook just before the peck