When I want to sell I use the LC site and don't bother trying to sell late notes any more. That's because I don't need any losses.
So I pick a category (lowest interest is fastest for me), sort by that, and offer nearly everything that's current. at -.25% to start.
Then I drop it about 4x/day. -2.5 gets most sold.
If I have to drop to a net loss amount I just don't. Canceled by User takes care of those. Often they will sell in a later batch if they're still current.
When I pick the ones to list, I choose <$23 payments received if the balance is still a fair amount, and watch the payment due date to keep it about 3 days out so I don't get a Canceled Payment Pending (especially after a weekend or holiday).
When the For Sale list is empty, in about 3 days, I start over with a new list of currents.
I have a fast paper and pencil notebook system that keeps me up to date with how many sold, when, and for what discount.
I love PeerCube, and have often used it, but to me this is more practical time-wise. I list about 30-50 at a time, or up to a hundred.