This is the perfect discussion to insert the `2nd reserve' info. on a lot of top-tanks.
Years ago I was within a coupla miles of Handy Bikes in Columbus, having ridden 100 miles of back roads to get there. I ran out of fuel on RESERVE near broad street.
I laid the bike on its side(motomarina Sebring) and picked up the bottom even more to get the last few ounces of gas into the tank on the PETCOCK side.
Upended her and made it to the gas station.