Well not sure what commercial boat your talking about , guides where I fish swap there power 90% of the time between 1000 to 1500 hrs,whale watching boats the same, how long does that take ???the ones that don’t ,end up broken down and loose part of the short season they have, see it all the time, PS I fish out of Renfrew there is no boat shop close by, minor issue can cost them a month. There a guy at the marina now that takes care of the peasant ( regular Joe fisherman) and he is lines up with boat repairs all season he can’t keep up lol