Hey Alan that's a good point, about getting a separate 18" flag pole just for the flag idea. I'll take a look on eBay and see what's around... wind blown and worn flags are OKSaber Cycle sells the entire antenna for about $25.00 if I remember correctly. I bought one for my 1983 Aspencade. Works well for the radio, not so well for the CB. On the other hand, my CB might be the problem. That said, if you purchase one, I'd use "Blue Locktite) on the set screws for the top portion of the "Whip", as mine were continually backing out.
As for a flag? Not something I'd put on the antenna, but that's just me. I put a 18" Flag Pole from China, sold on E-Bay for about $15.00 (Flag Included). What we had was a "Chinese American Flag on a Japanese American Made Motorcycle, ridden by a Old, Overweight, Balding, Ex Marine, School Bus Driver" Strange combination all around if you ask me. You need to load up on the flags though. I've tried 3 different mfgs. and each flag only lasts about 500 miles before it gets Old, Battle Worn, and not very Patriotic to display!
Good Luck! Alan Miller