how about:
dont tread on me
dont oppress me
don't prohibit my pursuit of life, liberty and happiness (sailing)
well those probably wont help your cause.
I am not sure putting a boat on a trailer is the best idea.. i think it raises the risk of liftoff,
what i found helped us in securing mast up storage (limited to 2 nights a week, but that works for me) was getting a group of people to testify to the city council. showing how we (sailors) would help preserve the area (by cleaning up, and being a good example to others).
good luck