Hi,
I used pinch clamps to shut off both flex lines on the filter. Worked well but it has been a while, perhaps I should change my filter again. I did not disconnect the battery either.
However, running the tank dry can cause the pump to pick up debris and it can also cause the pump to overheat since it derives cooling from the fuel in the tank.
I found that if I positioned the car just right on the edge of my driveway, the overhanging rear allowed plenty of room to crawl under as the driveway sloped away. I didn't have to jack up the car or remove a wheel.
Regards,
Adnan