The phrase "miss the boat" refers to an opportunity that has been missed, and antonyms for this phrase could include terms like "seize the moment," "take advantage of," "jump at the chance," or "get on board." Using these antonyms would imply that someone is actively participating in making the most of an opportunity, rather than simply letting it slip by. Other antonyms might include words like "timely," "opportune," or "on the ball," which describe a sense of being prepared and ready to take action when the moment arises. Ultimately, the key to avoiding missing the boat is to stay alert, be proactive, and remain focused on achieving your goals.