so thats why they call it the "pokie":evilb: on the serious side are you even allowed to put up your own channel markers? here in the keys they are pvc pipes stuck in the bottom, they only last a little while then the marine patrol removes them(this is in the backcountry/flats )then someone puts them back,and on and on......

No... only the appropriate regulating authority can post legal navigational aid / notices...... USCG / DOT/ DNR / whatever is in your boating region.....

i.e..... the guy who anchors a "No Wake" bouy in front of his property on a river or lake and thinks it's now a no wake zone in front of his property.....nope....don't work like that.

welp....
 

see above

you could probably make your own,most of those signs are made of mdo "medium density overlay" plywood ,