The SPOT system has been discussed here, too:
http://www.mt-whitney.info/viewtopic.php?t=2216When you consider the SPOT, evaluate the terms of coverage. Terms of the coverage exclude:
"...
a) your situation is caused by circumstances such as a forecast change of weather conditions, which could reasonably have been anticipated at the date you started your trip
b) you have NOT made adequate provision of resources or training or competence needed to complete your planned trip.
..."
These items often have a different face in hindsight than during the planning stages.
Dale B. Dalrymple