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hitman,when you say u get 5-6 ft. for every 10yds,what speed is that based on.I know with 18lb leadcore I get 4-5' with 10yds. @ 2.0mph on my gps.pretty consistently through my own testing.I know the manufacturer says 5-6 ft. with 10yds. out of copper but it does not say what speed that comes from.I thought maybe since it is probably being used more for salmon on lake MI and lake Ontario that it is more like a base speed of 2.5 or so,if that is the case I typically troll from 1.5 up to 2.5 with average of say 1.8-2.0 that would mean maybe 6-7 ft. of depth with copper @ around 2.0,which would mean copper would be more effecient for me....thanks for the response...

Is there a dive curve out for copper line?I have used leadcore& small boards extensively fishing inland waters for walleye,for about 10 years...am now wanting to fish lake erie (central basin) and going to set up 4 rods to target fish holding 30 -50 feet down @ 1.2mph to 2.5...I figured a 50' leader followed by 5 colors...and 150yds of 30#power pro would get it done.Depending on lure types and speed I should be able to cover these depths nicely.Now I see copper is gaining popularity and was looking for good info on its use.Does it really sink faster than lead?How is its workability compared to leadcore..Has anyone tested to see its diving ability @ different trolling speeds?I know most of u salmon guys troll a littler faster than us targeting walleye here on erie.Anyone with experience trolling copper info would be great....