Quick pins have been known to fail, although it is rare, total reliance on them should be avoided.

This may not apply on your boat, but on my Hobie 16, I use a quick pin for the forestay, and a solid pin and ring for the jib (which becomes the forestay when rigged). Once the jib is up, I remove the quick pin from the (now) slack forestay and replace it with a solid pin and ring. When it's time to take the mast down, I switch back to the quick pin before taking down the jib.

The other option I have seen used by a top sailor is to double up on the quick pins. As long as your wires have large enough loops (thimbles?), you can fit two pins in there (you will need to insert them from opposite sides of the chain plate, since the heads are so large). This is especially helpful for side stays, since it allows you to adjust mast rake by "walking" the pins up and down the chain plates (remove one at a time and leapfrog it past the other).

Hope this helps, not the easiest thing to describe in text...

Mike