I boiled all mine it sunk in a couple hours, I got a deep pot poured hot water and boiled it the. Turned ends around if it was too long, once u turn the stove off leave it in the water cause it will start absorbing more water faster and kill any bacteria too. If it won't fit then try a bucket and pour boiling water In that once that cools dump it and add more, I put my 4 foot in my bathtub and filled with hot water two to three times a day took about 4 days. Good luck and if it doesn't sink it and u lose patience it should at least have enough water so u can put something rather light to hold it down