I have 2.5 and 5 gallon gas cans that I use to fuel engines for various home improvement projects: lawn mower, weed whacker, chainsaw, electrical generator, post auger, pressure washer, etc.
I fill up these gasoline cans at the local gas station. The gas pumps are primarily designed for modern cars.
Trying to fill the gas cans on the ground, the gas pump "clicks off" every second or so. It's very difficult and annoying to fill the can. You need to squeeze the handle at the perfect amount of pressure, and even then the flow still often turns off.
My gas cans are newer plastic post-2009 EPA regulation cans. They have no vent and a permanent plastic filter after taking off the cap, which restricts the in-flow. This question also applies to filling metal jerry cans.
The station's pumps are likewise a modern pump design with safety features such as automatic cut-off for overflow or vapors. The pump's regulator cuts off gas unless in the perfect position, which seems to be only designed for new cars. The filler neck has a sleeve that requires pressure.
How can I fill a modern gas can at a modern gas station quickly and efficiently, without the gas pump clicking off every second?

