There's a great article by Lloyd Athearn, the Deputy Director of the American Alpine Club, at:

www.americanalpineclub.org/pdfs/MRreal.pdf

It helps to put the whole issue into perspective (for me at least), I especially liked the statistic on pg.3, under "All Oregon Rescues" for the year 2003:

Climbing = 3.8%
Mushroom Picking = 3.3%

That settles it, lock up all the mushroom pickers and the problem is solved!