Here is how I do it on my low ratio reels...the 1000 FW series and the Presso Limited 1025. I only put 70 meters on the spool. I count my handle turns exactly 116 times and I am done. The beauty of this is I can get 2 reels spooled up with one spool of line. Even when a spool gets low after a lot of use of breaking off and retying it still casts a mile. I wasted about 2 spools of line before I figured this out. At first I hated the stuff...now I love it. Other use this line and maybe they have better...different methods they can share...but this works for me.
Regards