southace said..
Anytips before I go aloft and try to feed the halyard back down the mast?
Yes. Probably best if you have the boat alongside. If you dangle a mouse back down with a weight on it, it will most likely wind itself around every other line inside your mast if the boat is standing vertical afloat in the water.
Determine which side of the mast you want the halliard to go, then haul the mast over to that side by whatever means you have available. Then drop the weight with mouse attached down the mast so instead of dangling it actually slides down the inside of the mast.
The preparation is to make sure all other halyards are fully taught. As a weight I suggest fishing line weights of small enough diameter that you can draw through the halliard exit slot and the first line to go down be 80 lb fishing line.
The passage of the weight and line is not likely to be smooth due to bolts and rivets in the mast so I would drop it rather than feed it down. Silicone spray could be handy.
You should be smart enough to figure the rest out.
So why did your mouse snap?? It was new line wasn't it??
It is a bitch when somebody or something moves your cheese isn't it?? Read the book "Who Moved My Cheese".