Here is an article we wrote about swivels. We cover the Ultra and the issues with swivels in the article.

http://features.coastalboating.net/Editorials/swivels/index.html

We do not use a swivel. I just talked to Alex about it, and he said that ours used to do that. So with an all chain rode and no swivel, Alex re-shackled it the opposite way around on the chain link and it solved the problem for us.

Vice Commodore, OCC 

Looks good but I wonder what others in the OCC make of it as I know some have had various mishaps with stainless swivels?

The good news. :)
I have just fitted what is called an "ultra swivel" which I can confirm turns the anchor over and appears to be a much stronger all round design and construction than the conventional swivels. So this should cope better with the sideways strains. Most swivels are tested in a straight line pull, which is useful, but does not reflect the sideways pull / strain put onto them at times.

The bad news, is that the "ultra swivel" costs a staggering £260. Golden Arrow Marine are the sole UK importers and are based in Shamrock Quay, Southampton.

I have the same problem with a delta, I always have to go forward to turn it. Hope you find a solution

Yes we have the same problem with our Manson.

My Rocna anchor is fantastic, but it always seems to come up into the stem head roller the wrong way round. This looks like the effect of the water flow over it causing it to turn over. Does anybody else recognize this problem?