I am nearly 75 and just don't have the strength and response that I used to. I was looking for a line to pursue large pike and musky with large flies. After test casting this line with a fast 10wt rod and found that it was smooth flowing and quick to load, few back casts, one or two with the head beyond the rod tip. I could cast large 10", wind resistant streamers to 80', which is good for me. I can see making 50' to 60' casts with large flies all day with little arm fatigue.