Flat bottom boats are quite popular among many different anglers. Such boats are typically smaller than other types of boats and also feature an open design. For the most part, flat bottom boats are designed to be used on smaller bodies of water that are calm, such as small lakes, slow rivers and ponds. Keep in mind that flat bottom boats do not typically hold up well on rough water or water that is choppy. These boats should not be used in such waters because they generally are not very stable.