Well, yes, that would be very slow using the line out..

If you go to ACE HARDWARE or someplace like that... and get 7 ft of clear tubing....like half inch inside diameter.... and put that into the tank and into a five gallon gas can..... and then use a little section and a mechanics rag... or plastic bag... to cover the top of the fuel filling pipe... you can BLOW into it and start the syphoning process... which should take about five minutes... take the bag or rag off as soon as the flow starts....
I just try to plan for the worst case......and if the golf ball did not work for some reason.... getting that plugged with it full of ' whatever' would sure be a mess.... and potentially dangerous for others attempting it...