One problem with trying to compete with Seals, which also has HU, is that there are a number of regularly scheduled tournaments on Seals and often the start times on OVP conflict with them.  Especially without a two monitor setup (like I used to have before Black Friday), it is virtually impossible to play both sites at the same time. 

It might attract more people to schedule events both before and after major Seals tournaments, or at the very least avoid conflicting times.  For instance, a 10 or 50 chip freeroll for something to do on the half hour instead of the hour might get more Seals players (who are most of the BTC poker players at present).

When I've been there in a freeroll that attracted a number of people, a couple HU ring games usually tended to start up.  Lately, though, I've just showed up to see two or three people and no games, while Seals is active.

Not sure how to advertise it.  I've been very pleased with the site being snappy (perhaps because of few players) and cashouts being fast.  If I'd had better luck recently, I'd have kept at least a couple BTC there at all times.