I have a 2002 280 Sundancer with twin 4.3 EFI's.last week my starboard engine quit and would not start. Engine turned over but seemed to have no spark. I keep the boat dry stored at a marina 10 minutes from my house so the convenience factor is big. I was charged four hours labor and $50. for parts to fix it. The problem I was told was a faulty ignition sensor assembly module that was the $50. part. Was four hours labor at $74. per hour reasonable to diagnose and repair this problem? I feel like I have no choice with repairs, the marina is real strict about letting other mechanics on to the yard, and I just want to keep them honest.