Call a canoe rental in the area of the river you would like to float. They will put you in, provide you with all equipment you'll need and pick you up at the end of your adventure. Some will even pick you up at your campsite or room and return you afterwards. Prices are competitive. Most also offer small stores where you can purchase soda, bait, sunscreen, chips and the other necessities for a day on the water. Many offer kayaks, rafts and tubes in addition to canoes.