I used a set for 3 years until I changed to foot boards. I did like them and while I had them rotate a few times, for the most part they stayed put under my size 14 boots. I have a pic but don't know how to post it.
Here is the URL of the pic on my Flickr site
http://www.flickr.com/photos/24915462@N06/2393884235/in/set-72157604420601487/
