I'm currently using the free version of ObjectDock, but sadly, the one single dock provided by it is not enough. The Plus version allows more docks, but I'm kind of short on money right now to buy it.
Does RocketDock support more docks? And, Anyone tried running both of them at the same time?

I use object dock for one side of my left monitor and rocketdock for the other side of the left monitor. No problems.

Cool. Do they take too much memory and cripple down the system when running at the same time? Extend the boot process by much? Or its not noticeable?

Both are set to run at start and the difference is so small it isn't noticeable.

Okay, thanks for the reply. :)