Around here only the BDGA (members/specifically the officers) and Parks and Rec are the only people authorized to make any modifications to the courses. This includes cutting down trees. We are actually in agreement with the city on this so that anyone else who gets caught will get slapped with vandalism ( if caught).
Of course it's still next to impossible to keep it from happening and it's gonna happen. We are just happy to have the cities backing on this.
That being said we just had to do some major tweaking at Veterans Park and one of the "New" holes , #5, has alot of little trees just waiting to get broken down. One of our club members was complaining to me about leaving them and that they are just going to get broken. My response was "That's why I left them in so that if someones going to "rage break" a tree, it'll be one of those.
I've also come to the realization that some people see me out cutting out honeysuckle or removing trees, thinking I'm some random person and don't realize that I'm actually authorized by the city. They then think that its ok for them to remove whatever they want. Sad thing is they see me more than the actual maintenance dept that's supposed to be doing that work.