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Old 10-05-2011
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Cooling water - to screen or not to screen?

I don't currently have one and was wondering if any here have set ideas on whether engine cooling water through-hull strainers are a great idea or not. These things - and their brass counterpart:



I've heard arguments both ways:
For: They stop large rubbish (plastic bags, etc.) blocking the cooling system entirely.
Against: They're impossible to anti-foul properly and hence allow little nasties to accumulate, restricting cooling-water flow...

Which one is true in practice?!?
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