I use that slider on the throttle for boost.. I think its pretty handy actually. The most forward position being the activation of boost. Gives you that feel of "pushing" the ship faster.
Give it a go, and see if it works for you.
Also, on the joystick, I've turned the far right toggle switch into a view mode. If I click it upward, it gives me the left panel (target/comms) and if I click it down, it gives me the right panel (status, cargo, etc).
I find that this is really handy too.