[ricki]

Securing permission to post a sign from public authorities can sometimes be a very difficult task. Aside from approving content, size, location of posting, etc.., providing reasonable justification for the sign can be damaging all by itself. In some jurisdictions, there is no posting of signs by anyone other than the governing entity. We have had cases in the SE where we had to abandon the effort due to all the public hurdles.

Where you have good, existing close relations with authorities such as some launches within Ft. DeSoto you might broach the subject carefully and see where things go.

If you don't have groundwork already laid with key individuals within the DOT or unless a parley is already unavoidable based on past incidents, I would advise caution in seeking such approval. Do your best to know the answer before the question is formally asked in other words.

What has been done in other areas is to put up temporary signs that come down at the end of the day. It isn't perfect but sometimes it is the best first step available. Also, I would circulate the sign content far and wide through shops, events, instructors, on forums as has already been suggested to help the effort along.