millijuna

Some friends of mine have property on a rural island on the west coast. In the end, to address this kind of thing, they and the neighbours built a helipad that was accessible. They worked with the local air ambulance to ensure it was actually usable.

The only routes for attack are physical manipulation of the ballots or breach in voter records/identity.

And this can be mitigated through appropriate oversight by interested parties (if you'll pardon the pun). My father has been a scrutineer for several federal elections now. In election Day, his job is to observe the goings on in the polling station on behalf of the political party of which he is a member. After the polls close, he (along with the scrutineers from the other parties) observe the counting process and note down the results.

The transparency and observation is what makes the system work.