These are a small step towards providing some more security for your racks. One other thing the whatchamacollars do is keep water from running into the freeloader/adventure rack mounting holes and causing rust. The rust was my main concern (since I don't leave my XtraCycle unattended very long) so I just cut up an old inner tube from my road bike and slid it up the posts on the freeloader then rolled it up a bit from the bottom, put the freeloaders back on and rolled the tube back over the mounting holder. Since I used pretty small diameter tubes it is tight enough that n water can get past there at all...