Ability to lock all side panels in the develop module

Maybe I'm missing a way to do this, but it's driving me insane! I'm in the develop module, and want to move to a lower section on the right-hand side panel to change options there. If I 'miss' the slider - which, on my screen is about 2mm wide) it's too easy to hit the arrow that hides the whole side panel.

When this happens, my computer throws a wobbly for about 30 seconds whilst hiding the panel and resizing the image. Once it's done this, I then have to hit the arrow again to re-show the panel - and lose another 30 seconds.

Please - is there a way of locking the left and right side panels so they don't disappear? 

If not, PLEASE can we have this option as it's driving me nuts!