Forgive my ignorance but how can attaching all metal objects improve the grounding - surely the contact to water is the most important factor - I have been advised that attaching to a seacock is therefore adequate (although I have yet to test this!!).
2nd question - when talking about a "copper Strap" - how big a strap is required or can a decent domestic 6mm earthing cable from your electrical wholesaler do the job?
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Everyone is entitled to my opinion!