I used to change trebles on some Bass baits. I used a better hook and used larger size on the rear. One problem you may encounter is the two hooks hanging together after upsizing one. Up sizing and using better quaility hooks will improve your catch rate.
Remember Crappie have tender mouths and don't put too much pressure on them as hooks will tear out. But always keep line tigh pulling one in cause a hole torn in the lip will let hooks drop free with any slack.
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