As a lane is played, oil tends to be push down the lane; however, there is still some oil on the edges of this tracked area; the most inside edge is the "oil line". You often need to keep adjusting your attack line to the pocket to find the oil line so that your ball will not hook too early.
A full rack of pins set up for your strike ball such that the head pin is a tad off spot away from your ball hand; can give unpredictable, often negative, results.
The segment of the lane, usually near the gutter, that either by design or happenstance, has more lane conditioner than the center of the lane. The result is that when a ball starts in the drier portion of the lane and then hits this spot, it will not come back; it has gone out of bounds in a figurative, not literal, sense.
The outside-in swing is just the opposite of "inside-out" armswing. Used to play from right to left. Lateral variance is any left or right movement of the armswing. The traditional fundamental armswing was designed to move in a vertical groove absent of horizontal swaying. Lateral variance is the amount and direction of the horizontal swaying. Lateral variance is forced through muscular intervention and invites inaccuracy and inconsistency into our game. Generally undesirable.
Spring Giveaway
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