I was concerned when I drilled into the comptip, to put on a new tang, while installing a spinnaker on a Hobie 16. I thought it was not a good idea but that is what they said to do. It has not broken so far and I have not heard of problems breaking that part of the boat due to chutes. They must put the, what is it, Magnum(?) spinnaker on the comptip. I do not know at all but I suspect it cannot be at the top of the forstay. There is too much going on there.
Later,
Dan