From reading a few forums, I think people get their items on the Pulse by emailing all their subscribers on their lists and giving them a watch link - plus paying for featured listings etc.
Some people are also talking about a special 'code' that you can use to get on eBay Pulse, but that sounds like a get quick rich scheme to me!
But the question is: Is getting in eBay Pulse really that helpful for your sales & profits? It's all very well to get lots of views, but if you aren't getting many conversions, it's not going to be worth the effort.
Out of interest I checked on one of the current eBay Pulse items "DOUBLE SIDED ** Custom engraved Dog Tag Cat Pet ID Tags". Has this person been selling dozens today or even recently? No! And the ones they have sold have sold for a pathetically small amount.
I'm very interested in hearing other people's thoughts on this!