The Gulf of Mexico outside the mouth of Crystal River proved flat-calm on our test day - not much of a challenge for the stepped racing hull handed down from the Donzi 35. Our boat wore a pair of 300 hp Mercury Verados, though it carries a maximum power rating of triple 300s. With the latter, the 35 will just top 67 mph. With our twin-300 package, we topped out at 58 mph at 6,100 rpm while burning 60.7 gph. Optimum cruise of 40.4 mph used 26.7 gph while turning 4,000 rpm.