The best choice for crab cake-making is a scoop that is shaped like a half sphere with a spring-loaded lever. These scoops have a flat side to level the cakes off.
Simply release the mix on its flat side and give a gentle squish with two fingers to flatten it out. Once you get the hang of it, you can crank out a tray in just a few minutes.
Common size scoops for crab cakes are #20, #24, or #30, measuring between 1 ¾ inches and 2 inches in diameter, and allow you to finish a tray in a couple of minutes.