We installed the Sunforce 600W marine wind generator and tested it for about 1 week. During that period, we never saw more than 0.7 amps at 12 Volts
Wind speeds estimated at 0-15 knots during the test period. We called Sunforce tech support and they indicated that we were doing everything correctly. Their suggestion was to return it to West Marine for another one.
As per plan indicated above, we returned it for a full refund and purchased the Air Breeze. The Air Breeze is now working. Our anemometer is not calibrated, but as near as we can tell it's working as advertised. Today we saw 15 Amps as a squall passed through our marina. Of course, it's a disappointment that we had to step down from 600W to 200W. At least now we have a working wind generator.