I like the Mr Funnel, will have to get one of those for other applications. I appreciate all the suggestions of filters on the bikes, and I do have filters on my carbureted bikes. With that said, my original question was how to filter the fuel being dispensed, not find a way around it. Modern MX bikes are all fuel injected, meaning the fuel pump is inside the tank. An in-line filter after the pump does you no good at all, since even small pieces of trash will hurt these little, high pressure pumps. I also don't want to have to ask someone who is about to fill up "WAIT--- do you have a fuel filter???"
I ended up finding a WIX filter part #33299 that spliced right into my 1/2" supply line. Neat, easy, still flows great. I really would have liked to put a clear filter on the pressure side so I could see water and/or sediment, but I didn't have the room without some really rednecky plumbing to get clearance. I may mess around with it later, since even relocating the fuel pump wouldn't be too hard, I have lots of room down there.
allcool, pump would not run all the time. When it did start, amp draw was way too high, and amps increased as it ran. Pump rated to draw 11 amps. Running for about 10 seconds, it was approaching 19 amp draw when I shut it down to prevent blowing the fuse. 75% of the time when you flipped the switch it would click, but not start. Same once removed and on the bench. New one works perfectly, every time.
I do realize that there are strainers in the fuel system from the factory, however there is a huge difference between a strainer and a filter.