I'm glad to see someone is enjoying the courses I've been running.
I've got a pro tip for all those looking to run sprint at JWOC or WOC.
Play this game
. It's a Finnish game that helps you practice route choices. It shows you which of the two route choices presented is shorter. It also times you. This is really, really important in sprint (and in the forest) since you have to be able to take in all the information of a leg within one or two seconds.
You can use Google Translate to read the website, but unfortunately it doesn't translate once you're in the game. But left and right are easy enough to learn in Finnish. Have fun!