If you are worried about losing an expensive flag, why not make your own and simply use the standard flag to hold it. Here is one I made from part of an old kite that I got at my local Goodwill surplus store where they sell thing by the pound for $1.69/lb. I picked up two kites a while ago and used part of one for this flag. It simply clips on the Catrike flagpole with binder clips so I can use the regular flag if it gets really windy. I was lucky to find several bike flags one visit to the store but you can buy a Bell bike flag at Walmart for $8 if you don't want to mess with the Catrike flag.
