looking at his website, I see some plastic ones attached to a surf rider.

Peter wrote:

Matt Langenfeld wrote:

Tim,

What's you view on the auto-inflate type of sponsoon that only comes
out during an emergency vs your which are "inflated" all the time?


Where did you get that impression?
I used Tim's original Sea Wing sponsons in a sea kayak symposium
rescue class over 10 years ago. Only some attachment clips were
pre-installed on the kayak. We deliberately capsized/exited and then
attached the sponsons and inflated them. Then we reentered, pumped
out the cockpit, and finally deflated and removed the sponsons. The
process was pretty similar to the use of paddlefloats which were also
used in the class along with assorted types of assisted rescue.
Seems that what he's promoting more recently to the Coast Guard is the
auto-inflate type of device (the ones I used were only manually
inflated).