In response to your question, MdG, I would generally think that tracking and fieldcraft would be a function of Investigation, as it's more of an active searching rather than responsive awareness (as Notice generally covers the latter). However, as that creates the bizarre situation where Aeryn and Lyra are the best trackers, in addition to being good detectives and archivists, I'm thinking that I will slightly adjust things.<br/><br/><span class="bbc_u">Investigation</span>is now used for more social, political, academic or intellectual searches. It retains much of its flexibility, and is still the better skill for high-detail work.<br/><br/><span class="bbc_u">Notice</span>, in addition to its role determining initiative and split-second perceptiveness, will cover most material related to fieldcraft, as the Fate core lacks a "Survival"-type skill focused on hunting, scavenging, intuitive navigation, tracking, and so on.<br/><br/>Of course, some amount of overlap can exist due to the flexible nature of Fate. Many skills can be used in unusual circumstances, with the right justification. A high-Investigation scholar armed with an accurate map will be able to thereby justify her ability to navigate comparably to a high-Notice pathfinder or scout.<br/><br/>So, yes, in this case, I would say making a Notice roll would be the right option. Also do remember that Fate points can be either spent before or after a roll (given that the other option for them, aside from adding 2 to one's result, is rerolling all four dice).