After 10,000+ miles (including the Great Loop) on our 2003 CD25 with the 130 Honda, we've never thought we needed more. I've clocked 32 mph on the GPS with just me on smooth water. Fully loaded for the loop (full gas and water, Honda 2000 generator, two anchors, supplies for two weeks, clothes for two months, etc., and two adults) our sweet spot (max mpg while planing) was 18-19 mph, and I could easily cruise at 25 mph, all on smooth water. Performance decreases in chop and waves, but then we generally slow down anyway as the conditions deteriorate. We have trim tabs (a must), and our lifetime gas consumption is 2.55 mpg. The engine only let us down once, when a stuck thermostat after 3 months on the hard caused overheating. Had that happened 30-40 miles offshore, which we've been a couple of times, I would have taken out the thermostat and limped home with a cool-running engine.