Just put 8# green nano on my reel after having used 6# white nano for a few years. I really like the line casts great very good sensitivity and line management. I tried my knot(I dont use nano knot) out with the 8# and was just able to get a 12# anchor to move a bit til knot broke. So 12# strength with 8# nano for me. This rated better than Kanzen 15# braid that I have, Kanzen gave way with the same knot at 9-11# repeatedly.
And yes keep it away from rocks.