Halyard Splice vs Bowline
All knots are weaker than the line , most like bowlines are only 55% of the strength of the line.Buy a fid for the size of line you need to splice and the instructuions will come with it.On the first try, you may get frustrated, cut it off and try again, so practice on a 5' piece of throw away line. If you are new to this and intend to splice line that has been in service for more than one season you will have a hard time. New line is a lot easier and the splice ends up smooth and at 90% strength of the line. As part of the splicing proceedure you will use a marking pen to mark various points on the line. Two different colors may make this easier. At a worst case, if you don't want to learn to splice, buy the new halyard line from West Marine and have them splice on your old fiting.Once you have done a couple you will be able to do eye splices in your braided dock lines as well as braided fender lines (rainy day low priority projects, but the results look great.)