Has anyone tried one of the new lines that are supposed to have a super high floating tip that keeps floating?

I have not ever really found a bad line from any of the main manufacturers. But all the lines I have used thus far - the first foot or so sinks - especially as the line gets used more. It's kind of annoying. And definitely affects fishing when you are nymphing.

I think Cortland makes the dyna tip. And I think SA makes something similar.

thanks,

Greg