One last note - I researched those backpack units and it looks VERY suspect - at best - in terms of safety for the user. Wading in the water one is sampling gets even my attention. No thanks - I'll just get a snorkel and float around for samplings. Still not sure if there's anything but a seine that will work for fish collection.

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

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