We made permanent anchors for our dock system using old car tires. Lay the tire flat on flat ground, and fill them up with mixed concrete (with the ground as your bottom). Once they start to setup, insert a section of re-bar that you bent into a loop. Then a section of chain on the re-bar loop. Let it setup for a few days & the thing will weigh about 200 or 300 lbs. Eight of them have been holding our dock with 15 boat slips for about 5 yrs now. We roll them up on a section of the dock, then float it out to where it will sit & push it over. Then just tie a float to it in the winter when we pull the dock out.
Rather than the Anchor Buddy, I think I'd use one of those black rubber things in a good rope
. Would be way stronger.
(Message edited by bill_airjunky on November 16, 2009)