can buy that will allow you to complete these types of splices. Basically, they come apart once you have shoved the fid through the line so that you can put the strand up, inside the fid. Once you have done that you pull the rest of the fid through leaving the strand in place. I bought mine years ago at a boat show and it's one of the original proto types made out of SS. I think it's called a "Fid-o" now and made out of plastic. I would see if I could find one. Their are a couple of other models on the market that kind of do the same thing but the Fid-o has worked for me quite nicely over the years. Good luck.