Hi John.
This string became fun a little while ago.
I like doubles for a couple of reasons and I dislike them for others.
This couple is looking at a paddle in calm conditions: Perfect for a
big old double.
The 6' seas you tallk about would be out of the question for some of
the other options around.
I preffer singles but a double is a way to put challenged individuals
on the water,
Blind people can hear, smell and taste the spray from whales.
You can take a friend from a wheelchair to a double,
then the double out to see bergs and whales.
Devorce boats are good for all sorts of things.
Filming a superb paddler rock hop on an ice berg with a cameraman
clutching a $40,000 camera can be done from a double.
I have done this.
I think a double may be an idea for the original poster.
Alex