How many dock floats do I need to float my dock? This wizard will help guide you on how many floats you need to float your dock. Question 1 - What is you size of your dock the length and width?   Width: Length: Question 2 - Additional structures   Will you have any additional structures on the floating dock other than wood an dock harware such as metal roof, etc. Question 3 - What is the total weight in lbs of the additional structure or structures?   Total weight: Question 3 - Manufacture rated Bouyancy   What will be the Manufacture rated Bouyancy on the float you will be purchasing? Bouyancy: Result - We're done! Here is what we recommend.   Thank you for your information According to your answers you need to float your boat. Feel free to contact us at 1-888-212-8386 or e-mail us carolinadocks@yahoo.com if you have any additional questions.