John "Toast" Oast of Fishyaker.com demonstrates how easy it is to supplement a kayak's floatation with expanding spray foam. The foam expands as it dries, and may be used to fill an unused area inside of a kayak. The foam takes up room, which in a worst-case scenario may fill with water. The foam itself is also waterproof. It's an easy do-it-yourself safety precaution. For more kayak fishing how-to videos check out the Fishyaker Youtube page. Fishyaker.com