"Let's go fishing
Teams of guides and experienced fly anglers methodically fished similar 
stretches of each river on four three-day trips.  In 12 days, 157 brown 
trout were caught on the Ugly river, 51 on the Owen.  The fish represented 
43 percent of the Ugly River's estimated population of brown and 11 percent 
of the Owen's population.  Fish in both rivers averaged about 3.8 pounds.
Both the number of trout see and hooked declined on successive days of each 
of the three-day trips on the Ugly, presumable because fishing pressure 
pushed the browns tight into cover.  Researches allowed two to four weeks to 
elapse between each three-day fishing trip, and noted that trout sightings 
and catches returned to high level on the first day of each trip.  In other 
words, fish responded to angling immediately, but the effects on trout 
behavior disappeared after two weeks.
On the more pressured Owen River, the number of fish see and hooked were 
much lower on the first day and did not change during successive days of 
each trip.
Also, the trout in the Ugly river were less likely to be spooked, more 
likely to be caught on the first cast, and overall required fewer 
presentations.  Fish in the Owen that did not spook were more likely to 
remain at their feeding station while anglers cast to them."

Rick, 

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