This is the published data from Primus for the "Marine" and "Breeze" turbines.
Using data from gulfislands.weatherstats.ca, I calculated the expected power generation based on historical wind data. I estimated I'd get an average of 0.87kWh/day, equivalent to 3 of the 100W solar panels.
All very well, but Horton Bay is a lot more sheltered than the weather station on Saturna Island. I should have put my own weather station on Alastor and used that.