I said this a very long time ago, as I refused to use leadcore, I was practicing the " Naked chod" as it seems to be known, whist most hadnt heard of it .
I do not use a top bead, I have never found a reason to use one and I use the lightest leads possible and on small lakes I often use 1/2oz leads.
I have been told by "experts"that it wont work!, well I must ONLY fish for suicidle carp.
Do you do anything to stop the rig travelling up the line on your cast then beens as though no top bead? Or do you just let it go? Which could mean your rigs 30 - 40ft back from the lead by the time it hits the water