Recently saw a video from Headwater Kayak in California do a video in what happens to rec kayaks like the Pelican and Sundolphin models that have zero floatation when they fill with water (roll).
As my first kayak (just last summer) is a Sundolphin and friends and family use that one when we go out together (I upgraded to a CD kayak since), I went ahead and installed an airbag in the stern tonight, took 30 min. This model had a little storage area (not waterproof anyway), that I cut into to access the entire inside of the stern. Sanded the rough edges, added foam edging to make sure the airbag didn’t rub and pop, and now the back of the yak is completely filled up with air. Will help with floatation and that’s a lot of water that won’t fill it up now.
I strongly suggest if you have one of these models to watch the headwater video and at least know what your risks are… and practice rolling and wet exiting your yak.