Back in the '70's, we used to soak our mullet fillets and bonito fillets in whale oil, to increase the "S" factor and make the baits more desirable to snapper etc. It actually increased the catch ratio by about 60% compared to untreated baits. Ken Appel had a 44 gallon drum of whale oil in the back room and about that time, it was almost impossible to get, as the whaling industry was well and truly winding down in Australia. I still have a few jars left, but haven't fished in any club comps for a long time, so it gets little use these days. I also have a Sportex 663 one piece blackfish rod which is like new, built by Ian Whitton, of D.P Whitton and sons, another early days iconic business in the fishing industry. Good memories.