Option one: Connect a 7/16 line to the old halyard and pull it thru the mast and over the mast head. Connect the new to the same 7/16 and then pull it back.Option two: Cut the shackle off the old halyard and mate the old and new. With the old pulling out and over the mast head, the new get pulled in.Option three: Cut the shackle off the old halyard and tie a 7/16 line to it. Pull the old out thru the mast head then connect the new to the 7/16 line then pull back in thru the mast.I don't want to unstep the mast so these are my options, I think. My concern is getting a snag at the top of the mast and having to go up anyway. I think options one and three are very similar with option one being the easiest.Do you have another option?