Okumas will hold a lot of line so spool some junk line on the core to build up space then add the good stuff. I'm using 10# P-line hi-vis and I only spool about 350 feet of it on each one. P-Line is expensive and I can't see waisting money to spool on line that will never get used. Also, the line counter reels are the most accurate when they are full so don't cheap out by not filling your spools.