In any area of work - boats, cars, houses, roads, electrics, etc - there are cowboy operatives who do a bad job. To then condemn all work as bad practice which must be avoided, is simply ludicrous (unless of course you are a surveyor who has a vested interest in generating work for your favourite boatyard). The above article only just stops short of saying that all welding should be avoided when building a boat in the first place. To suggest that all overplating is bad, and quoting specific examples where the aforementioned cowboy hasn't properly welded the overplating and hasn't done his homework on depth and stability etc, is simply crazy. To recommend that you remove the entire outer of a hull, plus the interior at all those places, leaves you without anything at all! A narrowboat such as ours - which is the one referenced above that went from 6mm after 24 years to 1mm a year later - which has been properly and carefully overplated by a highly professional and extremely experienced boatyard is every bit as sound as it was before the repairs suddenly became necessary.