So if that's the desired thematic, it doesn't seem that difficult to fill one's WP track through foraging, scouting, etc. These are essential activities for survival, but the negative side-effects of pushing are less dire during those events. (I even read one post on the forums where somebody said they were using True Grit to generate a lot of WP.) There's a caution about "too many rolls", but does that mean the GM has to constantly adjudicate WP so that PCs don't get too much?
* A player only makes the skill rolls that the GM calls for, which comes to ...
* Don't roll to often (p.44). Just because the rules say roll for this and roll for that doesn't mean that you always have to. The rulebook doesn't know when the situation is dramatic, only you do. Sure a combat scene is always dramatic, but Leading the Way besides a river a nice summer day isn't perhaps so dramatic.
* You can't push a roll if more successes doesn't do anything. So you can't push a successful Make Camp roll, because there is no extra effects for additional sixes.
When it comes it is safe to push after a hunting scene because there will be no events. Well that is up to the GM to decide isn't it. Being on the same spot for long will attract things after all.