Skippers and guides on the Great Lakes have been fishing copper trolling wire for several years now. And, the reports I've read indicate that it's an interesting alternative to lead-core line.
I just ordered a spool which arrived last week. I plan to attach this line to a reel and test on Rock Lake.
I'll post updates to the blog after we've had a chance to test...
I'll try to keep the blog updated every so often: posting pictures submitted by customers, notes about recent tests, etc.