The Last Gasp and Hiking

[lugaid]

Assuming that one wanted to use both the long-term fatigue rules from The Last Gasp and also the hiking rules, it seems like the latter's fatigue use isn't well balanced to the rules in the former. For instance, in the original hiking fatigue rules (p. B426), a 5-hour stretch of hiking with light encumbrance would cost 10FP. In that system, you'd then rest for 100 minutes to recover those and then march for another 5 hours. (As an aside, that seems like an excessive rest there, since a person should probably be good to go after maybe a half hour of resting, but at least it was possible, and within an order of magnitude or so.) In The Last Gasp, though, that same 10FP would require a total of 50 hours to recover (assuming starting Fatigue of 10). That doesn't seem at all reasonable for 5 hours of walking while carrying less than 40 lbs (at ST10).

What would be some reasonable ideas for reconciling these two systems?