[ddbach]

It sounds like you may already have after market mats. Pelican has Lloyd's mats, which you can have embroidered with "Porsche" and this is a quote from that page:
Concerning Safety:

All Lloyd Mats (carpet, rubber and vinyl) now feature mat fastening systems. When the vehicle manufacturer provides mat retention hardware in the vehicle, wherever possible Lloyd’s custom fit mats are designed to attach to that hardware. In all other vehicles, Lloyd Mats provides its easy to install proprietary mat fasteners. No other floor mat manufacturer offers mat safety fastening systems for all their mat products.

I have the original mats in my car and the backing is a thin layer of foam rubber with lines of "PORSCHE" within it. (Have a picture in the camera) Sadly this is crumbling to dust but there is no clip/hook on the rear edge of the mats. I had to take my drivers side mat out because having the seat where I need it being short was pushing the mat onto the gas pedal as well. I've been debating a new set suspecting I'd still have the same issue as the bottom of the seat seems to be what was pushing the mat forward, perhaps necessitating cutting the mat short.

On insurance, your coverage may also need to be increased depending upon your profession and public/attorney perception of your earning capacity. I received this advice upon finishing training as well.