I was recently visiting my grandparents and was looking at my grandpas old tackle. He had drilled holes into the body of some of his old rapalas...so this is weird to me. He said he used to put blood in there and then put a pipe cleaner in so it would leak out slowly. Pretty cool idea I thought. He said it used to work awesome. Can't wait to try it but might have to wait until next summer to try it if it keeps snowing like it has been.