The above file is what we use at my club. It comes from Chapman's I believe.
I use the float with the chain going through it and ring on top. This way you can always see all your lines.
Chaff guards are very important.
If you happen to get one of the buoys with a solid rod going through it, make sure all eyes are welded closed.
Also, check the rod annually, as they can be rusting inside any you would not know it.
I run a stainless chain through my buoy + 1ft. to the swivel as that is where chains tend to rust the fastest.
When any link gets worn 50% -- time to change the chain.
Check closely every season. We take our setups out every fall.
Tie the pendants together almost all the way from the buoy to the top..
Check the tightness of the bolts holding your cleats to the boat. On #297 and #427 I found some of them loose!
Do not use any Chinese chain. They are no good.
Good source for stainless hardware.
http://www.bosunsupplies.com
Hershey