Instructables website shares how to make an affordable, functional and frugal Jon boat.
A jon boat (or johnboat) is a flat-bottomed boat constructed of aluminum, fiberglass, or wood with one, two, or three bench seats. They are suitable for fishing and hunting. The hull of a jon boat is nearly flat, therefore it tends to ride over the waves rather than cut through them as a V-hull might, thus limiting the use of the boat to calmer waters. Jon boats typically have a transom onto which an outboard motor can be mounted as quoted by wikipedia.
Learning how to create projects like this is another way to become self sufficient without having to depend on buying a high cost item.
Using this as a basic guideline, you may even come up with some ways to upgrade this project yourself.