4 knots and two piece are the same thingIf you want to play it safe, go with four knots. It allows the stringer to string the crosses from the top down unless he's really stupid. With a two piece pattern, if the stringer doesn't know what he's doing, he could end up stringing the crosses the bottom up.
Doh! I meant two knots. Most stringers where I am are self taught or taught by other self taughters. USRA is unknown. Only USRA stringer I know of is one who works at a PGA Superstore, but turn around at that place takes forever.4 knots and two piece are the same thing