When the elbow gets to its highest position during the recovery, shoot the arm into the water so that the second half of the recovery speeds up instead of slows down. Keep a rigid line from fingertip to elbow thus treating the entire forearm like a spear. In a normal stroke the 2nd half of the recovery (the entry) is not the powerful phase of the stroke. The power is applied during the pull (sometimes called the drive or the stroke). For the purposes of this drill however, you will make your arm entry very snappy and deliberate. Swimmers have varying habits, but one of the habits almost all fast swimmers have is a quick recovery. A habit almost all slow swimmers have is a slow recovery (especially a recovery that gets slower through the recovery). Spear drill aims to fix the slow recovery problem.