Almost doesn't count in many sports, and hang gliding is most definitely one of them. Whenever we decide to commit aviation, we must force our brains to operate with greater precision. Several techniques have evolved as the result of over 80 years of aviation experience, of countless mistakes made and the best efforts of aviation pioneers to find workable solutions. These techniques work as well as anything can, and we should add these tools to our arsenal. It is ultimately the pilot's responsibility to effectively manage all of the resources at his or her disposal in order to conduct a safe and successful flight.
Checklists are the first line of defense against mistakes of omission.
If a wire crew is available, they should be directed to confirm each checklist item as it is performed. Note that this does not make the wire crew responsible for backing-up every pilot they help launch. The responsibility for safe conduct of flight always resides solely with the pilot. To be most effective a checklist should be run in a linear fashion, from A to Z, without interruption. The wire crew should never attempt to run the checklist for the pilot.