I can teach a retarded monkey to make a soft shackle in less than a minute!

Just make them yourself, its that easy!!!

But for the traveller to beam connection its hard to beat this setup: Clamcleat

then you can have a one piece mainsheet/traveller with a split tail (easy to do as well) and you dont leave your traveller rope on the boat to get all messed up in the sun for months at a time.

Nothing wrong with your traveller moving around when the boat is on the trailer, its much worse for it to be in one spot with salt and crap all built up inside it...