A bouncing outboard and do a lot of damage to your boat. The continuous up and down motion places constant flexing and strain on your boat's transom, leading to cracks, stress fractures, and broken transoms. Save your boat with the Extreme Max 3006.6884 Skeleton Transom Saver! Designed to fit 2018-2023 Mercury Twin Rod 2- and 4-stroke engines from 150 to 250 HP, the transom saver installs easily over the outboard's trim rods and created a rigid support between your outboard and the boat's hull. Just trim the motor up, position the transom saver, and lower the motor again. No tools, cutting or drilling required. Includes steering rod clips to keep your motor centered and a sturdy canvas storage bag for when the transom saver is not in use.