Well, I am admittedly coming to this from
Spycraft, but over there we have some feats for this sort of behavior

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New Covert Feats - from the Soldier Wheelman Class Guide
Arctic Training
You are highly trained to maneuver and fight in arctic conditions.
Prerequisites: Balance skill 2+, Survival skill 2+.
Benefit: You receive a +2 competence bonus to Survival and awareness checks made in arctic and tundra terrain, as well as to Balance checks made on natural surfaces. Further, if you plan an ambush in arctic or tundra terrain, your opponents’ awareness DCs to notice you during the surprise round are increased by 2. Also, you move at 3/4 speed on trails and in the wilderness in arctic or tundra terrain. Finally, you gain 2 points of damage reduction against ice and cold-based damage.
Normal: Agents normally move at 1/2 speed on trails and in the wilderness in arctic or tundra terrain.
Desert Training
You are highly trained to maneuver and fight in open and desert terrain.
Prerequisites: Spot skill 2+, Survival skill 2+.
Benefit: You receive a +2 competence bonus to Survival and awareness checks made in desert terrain and plains, as well as to Spot checks made to notice things over 500 ft. away. Further, if you plan an ambush in desert terrain or plains, your opponents’ awareness DCs to notice you during the surprise round are increased by 2. Also, you move at 3/4 speed in desert wilderness terrain. Finally you gain 1 point of damage reduction against heat-based damage.
Normal: Agents normally move at 1/2 speed in desert wilderness terrain.
Forest Training
You are highly trained to maneuver and fight in forest and scrub terrain.
Prerequisites: Move Silently skill 2+, Survival skill 2+.
Benefit: You receive a +2 competence bonus to Survival and awareness checks made in forest and scrub terrain, as well as to Move Silently checks made while on a natural surface. If you plan an ambush in forest or scrub terrain, your opponents’ awareness DCs to notice you during the surprise round are increased by 2. Also, you move at full speed in scrub wilderness, and at 3/4 speed in the wilderness in forest terrain. You may drive
vehicles through forested wilderness at 1/4 normal speed. Finally, you may use the Craft (Weaponsmith) skill to
create wooden weapons (bows, spears, clubs, etc.) in one hour instead of one day (see the Modern Arms Guide,
page 7).
Normal: Agents normally move at 3/4 speed in scrub wilderness, and at 1/2 speed in forest wilderness. Vehicles cannot normally be driven through forested wilderness.
Jungle Training
You are a terrifying opponent when hidden amongst dense jungle foliage.
Prerequisites: Hide skill 2+, Survival skill 2+.
Benefit: You receive a +2 competence bonus to Survival and awareness checks made in jungle terrain, as well as to Hide checks made outdoors and skill checks made to set traps in the wild. If you plan an ambush in jungle terrain, your opponents’ awareness DCs to notice you during the surprise round are increased by 2. You move at full speed on jungle trails and at 3/4 speed in jungle wilderness. Finally, you may drive vehicles through jungle wilderness at 1/4 speed.
Normal: Agents normally move at 3/4 speed on jungle trails, and at 1/2 speed in jungle wilderness. Vehicles cannot normally be driven through jungle wilderness.
Mountain Training
You are highly trained to maneuver and fight in the mountains.
Prerequisites: Climb skill 2+, Survival skill 2+.
Benefit: You receive a +2 competence bonus to Survival and awareness checks made in mountainous and hills terrain, as well as to Climb checks made on natural surfaces. If you plan an ambush in mountainous or hills terrain, your opponents’ awareness DCs to notice you during the surprise round are increased by 2. Further, you move at full speed on hill trails and at 3/4 speed in hills wilderness. You move at 3/4 speed on mountain trails, 1/2 speed in mountain wilderness, and may drive vehicles through mountain wilderness at 1/4 speed. Finally, you gain 2 points of damage reduction against falling damage.
Normal: Agents normally move at 3/4 speed on hill trails, at 1/2 speed in hill wilderness, at 1/2 speed on mountain trails, and at 1/4 speed in mountainous wilderness. Vehicles cannot normally be driven through mountainous wilderness.
Swamp Training
You are well versed in the dangers — and opportunities — of swamp terrain.
Prerequisites: Listen skill 2+, Survival skill 2+.
Benefit: You receive a +2 competence bonus to Survival and awareness checks made in swamp terrain, as well as to Listen checks made in non-urban terrain. If you plan an ambush in swamp terrain, your opponents’ awareness DCs to notice you during the surprise round are increased by 2. Further, you move at full speed on swamp trails and at 3/4 speed in swamp wilderness. You may drive vehicles through swamp wilderness at 1/4 speed. Finally, you gains a +2 circumstance bonus to all saves against poisons.
Normal: Agents normally move at 3/4 speed on swamp trails, and at 1/2 speed in swamp wilderness. Vehicles cannot normally be driven through swamp wilderness.
Maybe these will spark some ideas

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