Dynex to rope splice for halyards

[Jack]

I am currently getting close to putting my boat back in the water after a year on land (whew!)

It is a 34' Searunner Trimaran. Cutter rig with 35' mast. I have a question about halyards. The year before I beached it I was using 3 or 4mm dynex as the work part of my halyards. I took some double braid about 7/16" or 1/2" and removed the core for 12' or 15 ft. and ran the dynex in to replace it. I use the halyard like a wire/rope halyard. Before the load is taken on the halyard I am at the dynex. This way I do not have to use 1/2" expensive synthetic line the whole way, and I do not have an expensive pile of unused dynex or what ever on the deck.
Looking at the specs on dynex

http://www.hampidjan.is/media/pdf/Dy...april_2006.pdf

I see 3mm in 1ton and 4mm is 2ton. I am wondering how much load I can expect on the headsails, or mainsail? I would guess there is a place to find these numbers.

I never experienced any failure or wear that concerned me. You have to be careful getting on the winch drum as it is so small it can override if you are not paying attention. Although the stuff is so small it really got to singing when the wind blew...:-)

Also I would like to make up a decent looking splice/bury for the tail. So far all I did was black tape (yuck!) the place where the cover starts and the place where the dynex meets the core of the double braid.

What am I missing here? There must be something, I mean it really works well, but I have not seen it anywhere or heard talk about it....:-)