If bits of this go through my house roof, it is going to be an interesting insurance form to fill in. Am I insured for this?
well if you ask your insurance company they tell you NO and they'll make a note in their records that you are planning to install a great big magnet to ensure a hit and a claim.................
If you ask your insurance company they, using that peculiar twisted reasoning that they use, will declare you a high risk client because you were worried enough to call them about it, and load your premium as well as alerting all the other companies that you are riskier than average. And that's before they come to look for the magnet.
Or, you can have a socialised insurance like in my Canton which insures all residences in the Canton for all risks. Low premiums* combined with complete coverage.
*I also usually get a rebate each year because claims haven't kept up with the premiums.