Rust-Proof Buoy Anchors

I do a lot of wreck fishing off the southeast Florida coast and rely on my marker buoy for accurate anchoring. To anchor these buoys I use sash weights, which I've found to be cheapest and heaviest weights available for the space on board.
The one problem with sash weights is that they rust quickly unless you rust-proof them, which I do with the type of liquid plastic sold to dip and insulate tool handles. It's available in several colors and usually comes in a small can with a zip-off top and resealable plastic lid.
To rust-proof several sash weights, I buy two cans of liquid plastic and transfer the liquid to an empty tennis-ball can, which also comes with a resealable plastic lid.
To dip a sash weight, wedge the can upright so it can't tip over and lower the weight into the liquid plastic to cover about half its length. You may have to adjust the amount of liquid in the can so it doesn't spill over. Hang the weight to dry using a wire S hook.
Once the weight is dry, dip it again to cover the other half. You'll have rust-proof buoy anchors that you can store anywhere without worrying about stains. - Bill Smith, Jupiter, Florida