Dutch sent me a couple of Whoopie hooks spliced into chains. They work much better than the larks headed ones. On the larks headed version, the hook wasn't allowed to freely move on the chain. This makes judging how far to pull the strap around the tree a little more challenging. More troubling, the larks-head would sometimes get in the way of the hook's opening. It is important to make sure that the larks head was fully seated on the bottom of the hook. With the spliced version, there is no problem in this respect. Also, the spliced version is easier to use in terms of not using the hook... it is just a loop for passing the Whoopie through.
On another note, I was a bit concerned about the inability of either version not being able to slide over the part of the Whoopie that has a bury. I had no problem this weekend. It would just slide to the bury and stop.
Below is a pic showing the larks-headed version and the spliced version. The first is a hook larks headed and properly seated, the second is a hook larks headed and not properly seated, the third is spliced and against a bury, and the fourth is spliced.
Close up of the improperly seated larks-headed version: