What do you mean by a double Yale polydyne pennant? Is it a "Y" splice or two pennants seized together?

I would like to get one if they are available. When I use two pennants they always end up wrapped on the chain if the boat sits in calm conditions for more than an hour or two.

I have ridden out 55-60 knots with the furling head sail on the furler. I just do a really tight furl and tie it off securely with extra wraps and a few sail ties. It has never unfurled at all.