That is exactly what happened on one lake it was fine I pinched the heads off and caught perch and it was good... The lake I went to the next day however all the fish would bite was deadstick minnows and all I caught were large perch... Both were new lakes for me but I was quite surprised by the 2nd lake only producing on whole minnows... I always nail fish on minnow heads... Maybe due to the fish being bigger in this lake they did not want to mess around with the smaller baits?