One of the test boats was equipped with whisper-quiet twin 115-hp Yamaha four-stroke engines, a combo that's ideally suited for offshore situations. The four-stroke engines offer enhanced fuel economy and range, together with peace of mind, as we learned by running on one outboard. The boat hopped on plane within a few lengths and turned a respectable 30 mph, which is more than enough to get you home in an emergency. The single-engine model, rigged with a 250 Yamaha, was the hot rod of the two. It runs 45.5 mph at 5400 rpm, according to Yamaha's GPS data.