Ckewing, I don't have experience but like you I am on a mission to learn new techniques as I progress on this wonderful quilt pattern.
I found some really good you tube videos by Becky Goldsmith. You can type her name in and you tube and when get her channel, go to videos
and back 7 years ago she did one on pinning outer points on needle turn applique and another on stitching outer points. Since she draws the line and needle turns
it would be a lot like the back basting when it comes to the manipulation of the seam and fabric at the point. She also had a good one just a month ago on
Turned Edge Machine stitched with wash away stabilizer that I watched. If you are like me, you will find a bunch of her videos interesting. HelenW
PS I just found Becky Goldsmith's website
www.pieceocake.com and on the home page at the top she has free videos. Click on that and she has them
all organized by topics.