I tried them once also. Motor was losing rpm while running down the lake and I could not figure it out
They kept my boat three weeks and came up with a diagnosis that it was overheating and that it needed a new impeller. I told them I was going to the lake to verify that would solve the problem. Got to the ramp and battery was dead. Left the power switch on for 3 weeks and drained the battery. Charged battery next day went to the lake still doing it. Took it elsewhere and they said that whoever i bought the boat from had broken the hot foot throttle cable and taped it back together instead of replacing it tape was stretching that was why i was losing rpm as it would not open all the way up. Broken cable and sartin told me it was a impeller. I won't be going back. Glad you had a good experience with them