No, I'm not talking about tanker aircraft and fast jets doing crazy, almost sexual things at high speed and altitude....
But the principle is almost the same
Re-fuelling out on the briny is a bit of a hazardous balancing exercise over the stern,( nautical term, but blunt backy bit for some

So... has anyone had a go at converting a tank fuel cap to accommodate one of those more (ahem ahem) modern squeezy bulb fuel lines found on the 'competitors' fuel tanks that sit neatly under-thwart....(yes, that's another nautical term for those of the 'Run It In A Wheelie Bin' persuasion, not a derisive design comment on the fiddly 'Gull tilt retaining hook)
look forward to hearing any clever little japes that don't rely on 1/2 doz bent coat-hangers and copious strips of Gaffer tape (note another Nautical Reference ... crumbs, on fire today)
Neal