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Q:Does this dock float have a plugged drain hole in it....we need something we can partially sink, move under dock, then drain to raise.Asked on 2/10/2010 by Ken S from Jena, LA
A:No this product does not work like that. Dock floats are filled with buoyant foam so that they can hold a load. The buoyancy rating is given to float the whole float above the water. This float is rated for 550 lbs. To sink a float this size half way you would half the buoyancy rating which comes to 275 lbs. Therefore if you take half of the estimated weight of your dock then divide that number by half of the buoyancy rating you will find out how many buoys you will need. For instance, if your dock weighs 2750 lbs. then half of that is 1375 lbs. 1375 lbs divided by 275 lbs (half of the buoyancy) would give you 5 floats needed for the floats to sit half in the water and half above the water. Our suppliers do not make a dock float that has a drain plug since they are filled with foam, because that would damage the foam. Please contact our technical department at 1-888-683-7866 for more information.Answered on 2/17/2010 by Justin from Overton's