HP keeps us safe and neat.
I found that on a previous boat of the same size and weight of the Mac 26, when trying to beat a sudden storm back to the ramp, I couldn't get into the shallow harbor with 15hp running wide open while facing a 30 knot wind, four foot waves and a 4 knot outbound tide. It was even less fun trying to get the boat on the trailer in the midst of the storm after dark. Lesson learned. I'm happy to sacrifice a little sailing performance for the safety of more horses. Now, with the 50hp Mercury on the back of my M26X, I no longer have a power problem, or a time problem getting to port in a hurry if an unforecast storm pops up or a crew member or guest gets sick.Also consider that under certain shallow ramp conditions, or very steep ramp conditions,I'm not sure less than 25hp would allow you to drive the boat up onto the trailer for retrieval, necessitating wading out to attach the winch line and reeling it all the way in.As Captain, I've always had the rule that I don't get my feet wet exceptin an emergency. After twice seeing a crew member narrowly miss serious injury in a fall over a submerged trailer frame, and over a underwater cliff, I insist now that no one gets their feet wet loading or unloading. It's safer. Keeps muck off the boat, and out of the truck, too.