[quote user="Coop" post="2747"]Dave, how often do you change a line out on a spool,,,it seems if I fish several times a week, I find that the line loses its strength over a period of three or four weeks,,,as a result, I change mine out maybe every three or four weeks,,,is this the norm or a little to soon?[/quote]

wow and people thought I was crazy for changing-out my lines twice a year
I only use Ande, Berkley Big Game and P-Line Fluorocarbon
1 other thing I do is on the under-side of my spool, is write wth a Sharpie the brand, lb test and date spooled.