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?!?