On Sunday, May 31, 2015 at 8:12:52 PM UTC-6, Bill T wrote:
Hate to launch again as an "experiment " without knowing what is really going on.
You said the instructor "rear" seat release pull took what you estimate is a 200 lb pull.
Is the front seat release having a problem?
Any problems with an auto back release at top of climb?

BillT

Yes, rear seat release.
The front seat release hasn't been tested in flight.
The "back-release" function seems to work well at the top of the launch.