I have been having the same problem on crappies. I will hook them and bring them in a couple feet and they are just gone. I am using small teardrops and tried switching to a small bait holder hook. Same thing happened on that one. I don’t know if the fish were just sucking on the minnows and not taking the hook deep enough or what the issue is. I will go 6 fish lost and then not lose one for a dozen. Last night I lost 8 or so and caught 3. It’s frustrating when you are having a slow night. I might try switching to braided/no stretch line since the fish have been kind of deep…20 feet or so. Maybe that will help with the hookset. I might try bigger hooks and sharpening them better.