So OK ... update.
so haven't had a chance to use second spin halyard for a peel to date .
But someone on my crew last weekend managed to untie the hank of line to the second spin halyard thinking it might be useful to have ALL the lines free and ready to use and out of the way in the companionway. [ not just the ones we needed to use ... this is like the having the second jib halyard loose and ready to go when you have not even thought of hot changing jibs for the rest of the month. ]
which was ok ... but then someone let the snap shackle loose on the second spin halyard ... and then someone hauled the snap shackle end of the second spin halyard up the mast ...
which was ok ... But then no one told the skipper that this happened.
and had the skipper looking for the white with blue tracer line for 10 minutes tonight before i realized that it was sitting snug up the mast.
fortunately it did not jam the top spin halyard. yet.