The effects that not only 'ACV' have on anything regarding health be it fish or humans is not proven, but I am sceptical about any benefit, but less sceptical about the harm it might cause to to the digestive tract. A lot of these remedies of course go back to a time when we were convinced that certain weird concoctions were good for us, my Mother In Law swore by Cider Vinegar as a health benefit, and used to take it every day, if she believed it worked than that was good enough for her.
So I guess if you think it might work in fishing, good for you, but what I take slight issue with is being quoted science, when there is no science to support any benefits.
The Bait industry has gone crazy with so many products flooding the market, and I admit to getting seduced by it too, why I have even sampled different boilies with the claim they will catch fish for those 'in a hurry' ...needless to say I am still waiting.
Of course the delivery of all these wonderful expensive baits that are piled into lakes and rivers is not really understood as to if there any damage to the aquatic life of the water, or if there is any benefit to the fish, or conversely harm.
Graham Elliot actually highlighted the potential problem with pellets, and was shot sown by certain well known anglers who I suppose were protecting their own lucrative benefits. I cannot for one minute imagine spodding a gallon or more pellet feed into a tight area in the river or lake is a benefit to the fish, it really is for selfish reasons.
I maintain the best baits are naturals, and the sort of stuff we can find in the kitchen, corn , meat and bread, but that doesn't actually help the bait hype does it?
As Barbel anglers we are not in a position normally to feed a shoal of Barbel to keep them occupied, in days gone by on the Lower Severn Steve Pope advocated we introduce at least a gallon of hemp before fishing, now many offer a different approach , as with many other rivers Barbel numbers have been decimated, and we now fish for solitary fish, sadly just fat females mostly.
John Care and others have had a torrid time on the Lower Severn since the start, John admits to eight blanks in a row, before moving to another River and catching. This should NOT be happening on the Severn, especially that location, where in the past vast shoals of Barbel abound, it is also the flagship venue for the Barbel Society, and it's dead!!!
So what is the problem can't put all the blame on the Otter can we? Maybe just maybe we should look to ourselves and consider if our baits are a factor.