Just back from an electrical wiring repair on my neighbors dock. Turns out that one of two circuits I ran out there 4 years ago, no longer worked. After a couple of checks with my meter and quizzing him down as to what he had already done himself to troubleshoot the problem, I found a GFI hooked up backwards and then a ceiling fan shorted out... He claimed he hooked up the GFI just as it was previously wired. LOL.... I know better... Anyhow I got him fixed up and charged him 2 beers...
I really should have been an electrician... I like wiring up stuff...