We have a 2004 Bennington with 90 Yamaha 4-stroke - gets 25-27 with 4 adults (no underpinning - 2 tubes). We also have a 2018 Playcraft Daytona 23.5 feet with a 250 Honda that will touch 50 with just me on board (has lifting strakes and underpinning - 3 tubers) and 45 with 4 adults. All gps ratings.