I don't like to fill the tank until it runs out of the muffler. I just don't like to have all that alcohol in the vicinity of hot gasses coming out of the engine like that. And, some fields require fuel overflow recovery systems, so that would not work at these sites.

I try to make accomodations with the way I cut the muffler hole in the cowl so that I can get to the pressure tube via a hemostat (see picture if you don't know what I am talking about). Then I just reach in with the hemostats, pull off the tube, run it down and away OR connect it to a fuel overflow recovery system, then once filled, hook it back up.

It's somewhat of a pain, but after you get a method going, it's not that bad.

CGr.