Earlier this year I got a call from a boat manager for a boat owner with a big ol' Cal 40-something (don't remember off the top of my head) and they wanted the Max Prop they'd just bought installed. They'd got the pitch setting from a local prop shop, so I went over there and swapped out the 3-blade bucket he'd been dragging around. Well, turns out the pitch setting they'd got was waaay too flat and the boat almost couldn't get out of the slip. At my suggestion, the BM talked to PYI for a pitch recommendation for that boat and transmission. I went back a week or two later and the repitched the prop. Still not enough. So we went to the next setting. Again not right. Once more, this time at the maximum pitch the prop could achieve. Better, but still not right (turns out the BM ordered too small a prop. Oops!) So not only did he pay me for the original install, but another day's worth of travel time and labor. But it still cost less time and money than if all that work was done at the yard. Probably by half.