CG really isn't a life or death point. It's a range where the airplane is perfectly safe.

There are huge numbers of us who never accurately find exactly where the CG is and fly our models safely. We have, "Two fingers on the spar." and, "25% back, halfway out the wing." And lots of others.

There are huge numbers of us who really don't know if our model is nose heavy, tail heavy, or not. And fly them until the engine wears out.

How is that possible? CG really isn't a life of death point.

However, there are a number of readily available apps that will give us a good idea where the CG should be for those of us who want something more than "two fingers on the spar."