We have two e-bikes on a Strada rack. Locked together with one Kryptonite d-lock and to the rack with a Kryptonite cable and another D-lock. Our insurance company were happy with this arrangement as long as we don't leave them unattended for more than 48 hours. Somebody who really wanted them could get them with a bit of effort but mostly would-be thieves would look at the lock and decide to go for easier pickings elsewhere.
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