Thanks for the clarifications. I didn't mean to imply that it would be a good idea to dump the series drogue, but that it would be less economically prohibitive to do so than a para-anchor style of sea anchor.
I like the idea of the Jordan series drogue due to my fairly heavy aft bollards and the fact I would need a bridle of some scope to clear my wind vane. Given my windage aft, I think if I needed to "slow down" in a following sea, this sort of drogue would provide exactly the sort of non shock loading drag I would want in a bad blow.
I have enough purchase points (a crane off the stern, various hard points to which I could lash tackle) that getting it aboard would be, if not easy, easier than on some styles of boat, hence my interest.