Amsteel is the way to go 3/16" diameter = 5000 breaking strength 1/4" diameter is 7,400 strength. if you really want to step up get 1/2" and get like 15,000 lb breaking strength amazing stuff and if it breaks there is virtually NO energy when it snaps. Put 600 feet of 3/16" in like a milk crate or 5 gallon bucket.