So I have a pair of the Kingfish II stainless-steel chairs from west marine. My feelings on them are pretty mixed and I'm not sure I'd buy them again. They're super expensive at $250 each but I got them for $150 each so felt like I couldn't pass them up. PROS: The chairs themselves are as comfortable as they get and you can ride in them with the boat under way at 20+ knots and not feel like you're setting in a folding chair. CONS: At 32 pounds they are WAY too heavy and a pain in the a** to stow away. So why do I keep them (other then the fact I spent $300 on them)
First, we primarily only use one and I stow it just inside the cabin when at port. First thing I do when I open up the boat is put it out in the cockpit where it stays for the duration of our trip. Yes its heavy but its about the same amount of effort to put out the chair as it is to fold down one of the gunwale seats in the cockpit so not a big deal. Passengers naturally want to set on the big and inviting transom seat of our C28 but the chair is the second favorite spot. It's truly the most comfortable seat in the cockpit.
Second reason is fishing... The cutwater isn't setup very well seating wise for fishing off the back of the cockpit. All of the integrated seats face inwards towards the cockpit so you need additional seating when fishing. These chairs makes fishing off the back of the boat about as comfortable as it gets.
I'm sure all I did was talk you out of even considering these chairs which is fine. Like I said my feelings are mixed but depending on your needs they can be an excellent option.
Steve