Being all wood, this skiff wont sink, however it wont float high enough when swamped to make self rescue very feasible. Foam floatation can be easily added making use of construction foam available in 4'x8' sheets in thicknesses from 3/4" to 2". (Blue board behaves better during cutting than the white stuff, which sheds little balls.) Cut pieces to fit the bow, stern and under the seat and mast partner. Make a cardboard pattern to guide you. Triangle for the bow, trapezoid for the stern, etc. The pieces can be stacked and either glued or double stick taped together, then wrapped in either polytarp, or canvas, hot melt glued or velcroed. 3/8" stainless screw eyes (or hooks) can be placed strategically in the transom, stem, chine logs, underside edge of the seat, etc. to take 1/4" line (or bungee cord) to lace them in place. Done right, the bow and stern bundles can double as seats or sprawling back rests. Stay safe. Particularly in colder waters, add floatation.