Tell us about yourself!
amphi-dock.comMy brackets are available in Oregon. Enough for 6 barrels.
I used barrels as both flotation and as rollers to move the dock. If I had to build this again, I would place the barrels so that they would extend outward from the side to provide more stability. There are aluminum brackets which capture the ends of the barrel and has rollers which the barrel to roll. My barrels also flattened once they hit the cold water. I had sealed them on avery hot day without considering the physics of air cooling and contracting.
Dave, You probably sealed your barrels on a hot day and the air cooled when it hit the water and contracted the barrels. I would think that if you floated the barrels for a couple of hours prior to sealing them and launching that this would not happen.