It is time to replace my mooring lines. Although I can manage an eye splice, I cannot seem to get my thimbles tight enough not to slip and rotate. I searched and found the hot water trick.....worked but not enough. A friend suggested I start using a fid. Went to West.....the one they had used a wobbly plastic insert that made me want to look for another. I searched "fid": no hits. Looking for a fid suggestion, and schooling on how to get the thimbles tight.