I used the HD flag mount which comes with an adhesive plastic piece you affix to the tour pac first to protect it from the actual mount.
The flag is high quality...but...the instructions that come with it state that it is NOT made for highway speeds, only for parades.
Well, I got about 6,000 miles out of it in various riding conditions. Then the lower area that surrounds the pole began to fray. Before I could fix that (I just kept forgetting), I lost it on a ride in November.
Cost was about 30 bucks for the assembly.
The again, the flag that I fly in my front yard usually needs replacing at least once per year as well....regardless of the quality I buy.
bj