[Survivor61]

Ok, I just checked and I guess the hooks you mention are something the dealer has not the manufacture. This is what I got back from them:

"Thank you for your interest in MacNeil Automotive.

We have not received reports of the Tundra passenger FloorLiner sliding. Usually we only encounter movement if the FloorLiner is placed on top of the carpet dealer mats. If this is the case, please remove the factory mat and you should find the FloorLiner will not move around.

Although the driver's side FloorLiner does have holes to accommodate the factory retention hooks, Toyota does not use the hooks in the passenger floor so there are no holes on that side to allow for a retention device. We do not include hooks with the Tundra mats.

Please call our customer service department at 1.800.441.6287 if you have further questions and they will be able to provide additional assistance.

Best regards,

Derek
MacNeil Automotive"

So I guess I will have to see if I can find some of these hooks. I will call my dealer today.