Towed a 12 Pungo kayak on lake Mich and Gulf. Tested it by filling with water to see if it would sink(it didn't). Try the test. If its gonna sink it will be in bad weather and better to know ahead of time.
I climbed down swim ladder to carefully enter kayak and visited barrier islands in Northern Gulf at Miss. and Florida. Depending how you Tie it, the kayak may have a mind of its own following you.
My Kayak did fill with water in open water-I had no skirt. Then I put on deck. Friend used kayak to take his Dog ashore 2 times a day (on river trip from Chicago to Florida). As you know, rough weather makes difficult to climb off sailboat on swim ladder into kayak.