What problems are we trying to avoid? Not positioning equipment and passengers or crew to maintain optimum stability and trim. Not using engine trim and trim tabs to maintain optimum stability and comfortable pitch and heel. Being unable to get up on plane because of improper positioning of your passengers or crew and equipment, and improper use of engine trim and trim tabs resulting in boat porpoising or plowing. Transitioning between speeds with erratic throttle movement. Failing to maintain a heading during speed change within 15 degrees or three minutes before or after the hour on a clock. Decelerating abruptly causing significant backwash over your transom. Failing to warn passengers or crew of pending speed shifts, causing them to lose balance or equipment to shift. Not taking engine trim or trim tabs into account. Dragging out speed changes, taking too long with the bow too high and with too large a wake, and failing to maintain a proper lookout throughout the entire maneuver.