Dave.
Nice !
Note the wool tuff is straight back indicating co-ordinated flight. This is the mark of a proficient pilot as the tendency for inexperienced pilots is to unconsciously yaw away from lead.
The best way to maintain your line when flying formation in a glider is for the lead to set up a glide so that you need a little spoiler to maintain position. That way if you fall back you close the spoiler and if you are moving up you add more spoiler
Last edited by Big Pistons Forever; 13th Jan 2019 at 16:53.
Reason: Added a compliment