A boomstick is formed from an elongated hollow cylindrical body divided into plurality of compartments by axially spaced traversed partitions and enclosed at its end by sealing end caps. Preferably, an axially extending keel forming ballast will be provided to orient the boomstick and axially extending stabilizers will be symmetrically spaced on opposite sides of the body portions spaced from the ballast. The whole boomstick is coated with a polyethylene coating sufficiently thick to protect cylindrical body and to receive the caulks of workmen without damaging the body portion while providing a good retention between the caulks and the coatingto better ensure the comfort and safety of the workmen.




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