Eido my friend
I have searched the owners manual and found nothing to support your claim quoted below on the trimmers being out of the flying envelope, I am enclosing relevant information from the manufactureres web site
Further, I have talked today to a prominent flight instructor who claims that the info on the Bstall being safe and easy as described in the owners manual is outdated, incorrect and the Bstall should never be done unless over water and in emergency only , further he claims that Bstals are no longer used by other manufacturers of DHV 1 gliders worldwide,
can you please clarify the subject with our friend ADAM and what are his unofficial thoughts on the subject
Moshe Grad