Re: At DropBear & others with direction issues.
For navigating on maps, I use a device called a romer - you can buy them ready made, but using a graphics programme & suitably accurate printer I've made my own, printed on acetate sheets, with various tweaks - the most important of which is a single vertical arrow with a patch of red colour to the left, green to the right. Placed on the map with the arrow facing in the direction of travel, the colour of the patch tells you whether to shout "left" or "right" (yes, turning the romer over is theoretically possible, but there's a fair bit of text on it so you'd normally notice). It works whether you are moving up, down or across the map; being comfy with red/green it works for me, but you could do your own with the words "left" and "right".
(Prompt for that particular addition to the romer was "once bitten, twice shy". I don't normally struggle with L/R issues, but as you emerge from the forests onto a main road at 3am in the middle of Wales it can happen. And did; took us 40 minutes to realise as I just assumed the mismatch between what was expected from the map & what was on roadsigns was down to them being in Welsh. I know that doesn't make any sense *now* but after 17hours non-stop rally driving it did; we actually made up a fair bit of the time after realising & doing the U-turn and were only 45 minutes late into the 2 hour breakfast [nap] halt, but losing 45 minutes of precious rest time was a hard learned lesson...)
The other thing I've learnt from years of navigating is the word "right" is reserved for directional instructions; agreement or confirmation is always indicated with the words "that's correct". Otherwise you get the inevitable "Do I go left at this crossroads?" "Yes, that's right" confusion. Amusing to watch when it afflicts the car in front of you; less fun to be involved in.