it is the galvanic/electrolytic protection of shaft, through hull fittings, etc. that concerns me, as, as has been pointed out, that is an entirely different breed of cat...
I still dont know whether the anti-electrolytic bonding should or should not be connected to DC ground. I hope, Nigel Calder will tell .
As to smoking, and its dangers, well, true, but, you have to measure that risk against the pleasure it gives you (if that is the case). That is so with all our little pleasures in life. After all, saiing can lead to all kinds of death, too. Just think of the ozone hole up there !!! Or shark bite???