Delivering an effective block shot is one of the most difficult skills in playing lawn bowls. One reason: the target is not a real visible object. One is trying to place a bowl onto an opponent’s bowling path which is an approximate and imaginary curve. There are two ways to make delivering a block shot a bit easier.
Skip/Vice Stand at the Target Location
The Laws of the Sport of Bowls do state that placing an object onto the green to guide a bowler’s delivery is not allowed (Section 34) but this does not mean that the person directing the head cannot stand anywhere he/she wants on the rink (Section 12.1.3). It is only required that once the bowl has been released that person must immediately withdraw to a position behind the head. Therefore, the Greenbowler recommends that the person directing play should first visualize the path that the expected opposition bowl is likely to take when it attacks the head and then stand, with heels together and toes apart as pictured above, at the exact spot the block is needed, as a target for the bowler at the mat. Then, when the bowl is released the person directing the play should immediately and directly move back behind the head. In this way delivering a block shot becomes no more difficult than drawing to a displaced jack because the target spot has been made visible!
Place Your Blocker to One or the Other of Just Two Lengths
A blocking shot can be effective at any position along the opponent’s bowling arc from mat to head; however, the shot is easier to deliver if it is delivered with a weight that is as reproducible as possible. Furthermore, a blocking shot is more obtrusive the closer it is to the mat, but to still be a live bowl, a bowl must travel a minimum of 14 meters “from the center of the mat line” ( Section 17.1.3 ).
The Greenbowler recommends that the first distance that should be attempted is just a bit over 14 meters. This distance is reproducibly achieved on many Canadian rinks by taking a stance with the feet positioned as they would be after stepping in a normal draw shot and then pushing the bowl firmly forward but with no backswing. That is to say with neither any stepping forward nor elevation of the bowl to accelerate it. The only momentum delivered to the bowl will be the arm push. With only that one element contributing to the velocity, consistency is easier and the required length can be achieved.
The second distance the Greenbowler recommends for a blocking shot is 21 meters, which is the distance to the hog line in Canada. In other countries, the hog line may be at 23 meters and then that should be the target distance.
The person directing the head should stand, heels together and toes apart as illustrated, at the spot where the imagined path of the opponent’s bowl and the hog line intersect. The bowler on the mat should visualize a path (usually choosing the inside-out path) from the mat to where the person directing the head is standing and then bowl with the same weight as for a jack at the minimum distance. Once the bowl is released the person directing the head must promptly move back behind the head.
Who and When
It is the skip or the person directing the head who must decide, first, that a block shot should be played, and second which delivery, forehand or backhand, draw, running shot, or drive the block shot should be attempting to thwart. A block shot should not be considered unless it is pretty clear what the opponent is likely to do.
