I am a pinner most of the time. I trust it for bias seams, easing curves, and anytime straight lines are longer than about 5". I am very picky about matching intersections and hate to rip out the bulk in multiple seams' for a "little off" intersection. I stab pin at the intersection, then pin on both sides of the intersection through the quarter inch allowance. I pull pins just as the needle approaches them. I find that pinning can be an art form. If not done carefully, it can make accuracy worse. That is for another time ;-) . Obviously, I am not a speedy sewer most of the time!