Name: Anne Summerville, SC (Zone 8a) Only dead fish go with the flow!
When I worked at the Museum at University of Florida in Vertebrate Paleontology we used something similar on digs .. they are great if you aren't little a little old lady with benign positional vertigo like me. I have to be very careful about bobbing my head up and down. I pretty much have to sit down on the ground to do any gardening now.
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.
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