I have a new student that started today, I don't have CGs check list but as I go along he will learn it all before he solos. I took the plane up and got it into trim then had another friend trim out the buddy box. I had no idea about how long of a flight I was going to get so flight one ran out of fuel and I just dead sticked it in. After that I had my radio timer set for 10 minutes. As long as I remembered to turn it on all was OK. It beeps at 10 and it allows a couple more minutes to get the plane landed. When the last flight was over I took out the fuel and we had maybe enough for another minute. Those little kitchen timers are great. You just glue a clothes pin on the back if it doesn't have a clip and snap it on your radio handle.