"Remote" prospecting generally means you ARE on your own and subject to the frailties in whatever means you have chosen to get in and get out of a selected remote area.
Earlier in this thread, practically all of the means, methods and modes of transportation have been given elaborate discussion. Suffice it to say, success or failure hinges on proper decision making on the part of the remote prospector.
Prospecting on a professional level can be an interesting way for people that have an interest in prospecting and the appropriate experience and ambition to benefit from what they KNOW.
Getting OUT of a prospecting location is MORE important than getting IN...
It's a remote activity;
Prospecting is by necessity becoming a "Remote" activity. As development increases, homes are built around areas that used to be "local" prospecting sites. Political ambitions on the State and Federal scale strive to make areas that are close to the populace into parks and wilderness hiking areas - at the exclusion of prospecting and mining.
The "exit" strategy;
Having a reliable exit strategy is more complicated than most prospectors think. Factors enter into the exit that were NOT part of the PLAN. You are tired, fatigued, it's easier to get injured. Your brain does not work well. Normal thought processes that were assumed to be predictable before the prospecting venture are not as functional as needed to accomplish the exit. The stress from being injured along with the anxiety from knowing you may be in imminent danger adds to the complexity of rational thought and behavior.
There are many tales of prospectors attempting to "walk out" and in a state of disorientation - walk out in the wrong direction... Those tales usually do not end well.
The helicopter option works well.
Someone dropped you off and is expected to return to the same location at a given date and time. A helicopter will return to extract you from the location. If you have fallen and are injured, or need other assistance, the pilot can make a call or maneuver to assist in getting you out. I have recommended in earlier posts to have a partner and never go it alone. A helicopter charter is done by the hour. A charter flight will carry two people as well as one - space permitting. Otherwise - it's still possible to get a partner in on a second flight.

- Geowizard