Why is strategy in backcountry flying so important? There is an old aviation adage that goes something like: The superior pilot uses their superior judgement to avoid situations which would require use of their superior skills.
That adage holds true across all aspects of aviation, and especially in the challenging environment of mountainous terrain, where elements of weather, thin air, terrain, and obscuration can all make for a delicate situation requiring some forethought or just plain prudence. Terrain in particular can make for the most interesting element of the equation, as a pilot may have fewer options for maneuvering the lower into a canyon or valley they descends; the strategy of the approach and subsequent departure should be planned from the air at a safe altitude. That requires knowing winds and the terrain's effect on air movement, slope gradient, surface elevation and performance profile of the aircraft, and surface condition or texture.
Obviously, there's more to a safe and successful flight into a backcountry mountain airstrip than just setting a waypoint on the GPS and pointing the aircraft. There's a recipe for success and it includes the following:
Research and information
Stub for section on pre-planning of destinations
Routes: Make a plan, or two, or three
Stub for routing using sectional chart and terrain considerations
Know your aircraft
Stub for aircraft performance profiles and density altitude
Weather and conditions
Stub for dealing with weather and non-standard atmospheric conditions
Landing site evaluation
Stub for off-airport or airstrip evaluation
Contributor Patrick Romano has written a few articles as part of a series on backcountry flying strategy, aptly titled The Approach. complete with videos a detailed explanation of methodology/philosophy.