- Stock #374133 - LIft-Kept, Lightly used 2018 South Bay 525RS Arch with less than 100 hours! This 2018 South Bay 525 RS Arch is a high-performing tritoon boat. The owner of this vessel had some reinforcement done under the full fiberglass deck and professionally added some extra lifting strakes to the hull to reinforce the front when used on a lift. With the 250 horsepower Yamaha 4-stroke motor, you will have plenty of power taking the entire family out and doing all the usual water sports. Premium JL Audio sound system with sub woofer. The blue mood light on the boat and under the boa... read more