cheaper alternative to flourocarbon ???

[Diggin Jiggin]

I just finished going thru my 3'rd spool of seaguar flouro. At 17 bucks a pop it's starting to add up and the rocks in the canal can really chew it up. I'd rather be spending the money on plugs.

At this point I am almost exclusively fishing at night so I don't think that visibility is really an issue, so I am not sure I even need to be using the flourocarbon.

Does anybody have a cheaper leader material other than wire that they like and will hold up reasonably well ?? Also I need to be able to break it when I get hung up, so the pound test has to be 40 to maybe 50...