It's always blowing 30 knots (or more) in every YouTube video...
There is one in particular that purports to show a Pearson 28 heading out from a Texas marina in 30 m.p.h. winds with full working sails and the boat is hardly healing. Based on my experience, it appears to be half that wind strength.
It does appear to be 20 knots in the videos.
BTW, nice blog and nice boat - always liked the Alberg 30.