Possibly not so experienced, by the picture the main has not been secured and they are reaching with a no1 up -which would not be ideal on the wind in 30 knots , motor running or not is irrelevant, many years ago I delivered one of these to Wellington v v slow on the wind -but on a reach slid along well enough though the seas running in and filling the cockpit because there is no bouyancy aft to lift the stern was tedious and gave me great respect for the two boys on Ben Gunn .