Does this help?
Pickering Brook was Prickly Brook - have Prickly in the palm of my hand that I cannot dig out, but every time I touch anything I can feel it
I am fairly prickle-free and the only tick bites are from WA, so there are some positives :)
Apparently all I need to for Shamrock training islearn how to navigate by contour! I have been provided with some example maps but all I've done with them so far is resolve not to take the routes that the original runner took!