Join Date: Feb 2012
Location: New Orleans Louisiana
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Re: new halyard
You may need to replace the sheaves since wire has a different groove profile than rope, and old wire sheaves are often damaged.
In terns of strength, a 3/16 amsteel halyard will be at least as strong as the wire you are replacing, but may be difficult on the hands. You can splice an amsteel length onto a larger end piece for handeling (texen or sta-set are common choices).
If you want to go all the way to 1/2" you also will need to look at replacing all of your deck hardware. Must small boat stuff won't be sized appropriately to handle line this size.