this was the subject of a thread a while ago and the "its my money I'll buy what I like" mob hijacked it and got snotty when no definitive proof could be shown one way or another... there's no way to prove definitively if it works, as all fish are different, and all pegs are different, and all anglers are different....
if you think it works for you.... go for it......
if you are cynical, carry on with what your're doing....
if you wanna experiment, get the tippex out...
if you wanna try summat different get on a waggler....