How deep can a sinking line get you?

[harryhh]

One of the places I plan to fish for large and smallmouth is in coal strip mines. I know that one of the ponds is 50ft. deep. Other ponds may be deeper.

How deep can I expect to get with a line that has a 3.5ft/sec sink rate using a streamer?

Are there flies or methods where I might be able to get to 50ft.?

Thanks,
Harry
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