If your willing to spend a little money you can have them ghostwritten for you. Then it's a matter of quality checking and publishing, adding images, and so on. When you have articles ghostwritten you own the copyright to the work. I know a bunch of people who do this to jumpstart their account and take this time to become familiar more with how to build the perfect hub, SEO techniques, and so on.
In the beginning (about a year in of 4) I experimented with this but not so much for the copy but the ideas. I would have some articles outsourced, then I'd take a 400 word article and boost it, using the original content as a basis for starting my hub. I only did 20 articles like this but the time difference was astounding.
This was also when I wasn't so good at writing professionally (2007-8) and I wanted to learn the SEO techniques from reading work I'd outsourced... as I went along my technique got better and I started writing my own hubs completely. This was mainly for the product based hubs to learn how to write informative product based hubs correctly.
It's always recommended to write your own and develop your technique before outsourcing writing, as without this experience you can't even judge what you get back from them, and later you can leverage ghostwriting as a time saver. I wouldn't recommend you do this exclusively- but to jump-start your account's "brand" online when time is not of the essence this works.
I suspect many of the marketing types on here do this pretty much exclusively, this is how it is in the website building for many IM (internet marketers). But here you want to develop a 2nd person and 3rd person informative style as hubpages generally is and attracts others to a community :)