Just got back from a 3-day hike and thought it would be a good idea to write down and share some important lessons that I've "known" for a long time but relearned first hand over the weekend. Hope somebody else finds this useful, too...
* Most people overestimate the amount of food necessary for a short trek but underestimate water consumption.
* Water consumption is a serious factor that should always be carefully considered. 4 liters per person is minimum. This does not take into account washing.
* Even in temperate zones there is a possibility of encountering temperature extremes this time of year. Opressively hot during the day but very cold (just above freezing) at night. A hat and/or scarf or bandanna is mandatory to protect the head and neck from the sun while reducing heat loss at night.
* Heat, sunburn and dehydration are closely connected. So are fatigue and physical exertion. All these factors will impair your ability to make rational decisions. Being in good all-around shape is important. When travelling in a group however some individuals will always be in better shape than others.
* Distances may look short on the map but the situation on the ground may be much more difficult. It takes a lot of time and sweat to travel any distance over rough, rocky, heavily wooded terrain. More so if you carry a lot of gear. Never underestimate the terrain and always plan your route realistically.
* Study the map and check your course frequently with a compass. Failure to do that may mean missing your destination completely. However, it's also good to develop a feel for the land and terrain features.
* When carrying heavy equipment it's usually only practical to follow existing paths or trails. However, the trails may not always go in the desired direction. Check your bearing consistently and do not wander too far off.
* No matter what the label says a light sleeping bag will not suffice on a cold night. More so if you neglect to prepare your shelter properly.
* Building a good shelter is a very valuable skill that is best learned beforehand. Proper insulation from the ground is critical. Spruce branches work best in my environment but dry moss (if available) is also a good alternative.
* It's almost always better to stick to a simple but versatile type of shelter such as a poncho tent or lean-to because it's easy to build and can be adapted to almost any kind of enviroment. More elaborate shelters may look great in a book but take far more effort and equipment to make. They are also not as foolproof and may perform poorly unless they're built perfectly. This goes especially for any kind of shelter suspended from poles or trees which may be quite uncomfortable or fail unexpectedly in the middle of the night (as a friend of mine learned the hard way).
* Bringing a large sheath knife once again turned out to be a good idea. Particularly when it comes to building a shelter.
* A sharp hatchet is indispensable but unfortunately most people do not know how to use one properly. Lending your hatchet is almost always a bad idea. One should always use a stump to cut wood with a hatchet. The blade should never come in contact with the ground, rocks, equipment or your own limb. For some reason most people find that very hard to understand.
Tips, comments, personal stories and observations welcome!