Tony and Matt:
All the more reason to fly responsibly and have all club members do the same. Also maintain a good working relationship with the airports. Yes some are tougher than others. We fly close to Hemet and on the MIramar airbase without a problem.
Regarding Commercial operation, there is a difference between flying for hire and developing products for hobby, recreation and model use. It could be argued that developing a product for the hobby involves test flying by the developer, test flying by hobbists and promotional flights that may be done by a company supported person. The deveopment of new products for hobby use is covered in the original law.
Regarding implementation, I have reviewed the interpretation and have not seen anything that says it is immediate. Please show me if I am wrong. Having worked with government rules for most of my life the process is to: Publish the proposed rule in the Federal Register for comment (this has been done), obtain comments in a specific period (30 days), review the comments and make adjustments based on comments, publish final rule in Fed Register.
Paul S