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Join Date: Sep 2005
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You should hang a swivel block off one of the two "wings" shown in your second pic. (whichever side you want the halyard to come down on) The block should have a swivel to accomodated the various leads required for the different angles of halyard pull as you go from run to reach.
Then you can choose to run the halyard fully external, or put a entry slot up high and an exit slot below to run the halyard inside the mast.
The second jib halyard that you already have is not really set up to handle any loads except in the straight-down pull of a sail on the headstay. You'd have significant chafe issues on the cheeks of the assembly that holds the masthead sheaves if you tried running the cruising chute from that halyard.
Using the higher, outside halyard block will require you to gybe the sail around the forestay, rather than inside the foretriangle to avoid wrapping the halyard under the forestay.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)