Sign up for accounts on Facebook, Twitter and etc. Post your hub to these accounts, not more than once every 24 hours. Post social chitchat too. Don't leave your Twitter account as just links. The way to get followers is to be someone you would find interesting and follow yourself. Think about something interesting you can post at least as often as you post links to your hubs.
Set up an account on Blogger and post a link and summary to your hub there too. This gives you backlinks. Don't repost your entire post, just the title, summary and the link. Create a post to highlight your hub post(s). You can use a Blogger post to link all your relevant hubs in one niche or topic. Don't just repost a link and leave it there without some conversation or introduction.
If this is a topic you write about often join some online groups and put a link to your hub (or your HubPages profile) into your profile on the group site/ bio. Then be active in discussions with the group. Offer opinions and ideas and give your hubs as links for people to find out more and follow up. This is also a great way to find ideas to write about in the same topic.
In short - create engagement.