Here is the link to the foot rest complete with pic from Peter via Jays. (many Thanks guys)
http://www.talkmorgan.com/ubbthreads.php/topics/139473/1 My version is just about ¼" wide, does not get in the way of my size 9s.
made from Ally sheet and covered in vinyl. You mary need several goes to get it in the right comfortable position to suit your ankle. Its really just a 'ledge' to rest the side of your shoe on. Works a treat for me...