It depends. I check for large nicks or bends in the blades. I need to be able to get them razor sharp and be confident they will deploy properly. Then I make sure the ferrell is straight with a spin test. If everything is good I just get it clean, sharpen it and reuse it. However in the rocky soil I'm hunting g in at my lease they usually ha e to get new blades at a minimum. Sometimes I will save the marginal ones, sharpen the blades that are straight as much as possible and save them for coons and coyotes.
I hunt the same rocky soil.
I hate to toss them but I want a good clean blade for a clean kill. I know a lot of guys shoot hogs with old ones but I want to kill those too.
plus when i'm hunting I don't have time to switch over a new head to an old one. makes more sense to keep new fresh heads in the quiver