Incentives to offer guests when using dynamic pricing?

I've got a bit of a conundrum. I use PriceLabs for dynamic pricing, and so offering a discount on booking to incentivize past or select new guests to book direct, particularly when it's slow, seems like I'm not really offering much of anything that would motivate them, or that I'm offering too much, since when it's slow my minimum rates are already rock bottom. For those of you who use dynamic pricing, what kind of incentives do you offer, and what is your overall strategy around that?