"As for informing boaters of the rules ... I recall an idea from the olde days. We could have "
Burma-Shave" signs on all the numbered bouys and town docks. Each would have a witticism that would stick in peoples minds. We could have a contest, you have to photo all 80+ signs, win a prize (not shaving creme). So what would be a good 150' reminder ...

"
Okay, here's my contribution:
Don't be a fool
obey the 150 foot rule!
Sue