[TowerTalk] freshwater ground.

[Van Fair]

It is well known that salt water is the best of all RF grounds for verticals. Does anyone have any experience in trying to use a vertical mounted on a dock in a fresh water lake.  I live 200 feet out on a point in a very large lake and 200 feet of coax would get me to the end of the 40 foot dock. Part of the dock is covered with a metal roof which might cause some problems but would a 1/4 wave vertical for 75 meters  with several wires into the water provide an effective RF ground field? Anyone have any thoughts or experience on this subject. .  van