If you knew one; would it really ethical and in the best interests of the fish? Just imagine if you could catch the biggest fish in any water within a few hours of carp fishing. How much satisfaction would this create for you? MMMM. I heard of one guy who apparently did find one synthetically produced bait additive which was almost a copy of a natural combination of natural amino acid triggers, but not quite. It had the above effect. He kept it secret as a result of how it made him feel... Perhaps it's like a billionaire wondering just how many cars and mansions he can enjoy at a time?

Makes you think where the 'line' is...