Spreaders when Switching to HM Rigging

[Essington]

I am planning to replace most of the standing rigging on a 24' Columbia with line (probably STS-HSR).
Colligo makes fantastic terminators and such, and I am sure that they will point me in the right direction for the ends of my new rigging, however, I'm left with a big question ...

What do I do at the spreaders? Currently the shroud runs through a slot in the end of the round aluminum spreader, and is wired in place. But that technique wouldn't work with Dyneema. What is normally done at the spreader ends when changing a boat from wire to rope rigging? Are shaped delrin end plugs/caps a reasonable solution? Is the spreader end fixed or stoppered to the Dyneema rigging somehow? I'm curious what others have done, because I've not been able to find any info on this topic via google.

thanks.