Is the area you race in designated for commercial traffic? Mooring spots for freighters in the area? Then there isn't much you can do, because their use of the waterway trumps your use. Vancouver has 26 mooring points in english bay. Freighters have come in and dropped anchor on the start line while in sequence. Not a thing you can do about it.
i am an industrial electrician. currently doing high voltage cable splicing. i've done pretty much everything you can think of in the trade. industrial, residential, marine, data, commercial, control... done it all. i work in the film industry as a generator operator in my spare time.