At the field this weekend we were talking about this, one of the guys was telling us about this guy who was taxiing to the runway, no neck strap, he tripped dropped the tranny , plane went to full throttle battery came out of tranny, the plane did a 180 and headed back to the pits, the plane was grabbed by the tail as it try'd to climb over the logs in front of pits , a neck strap woulda prevented this, even if you have some slack in it if you like to hold it.