Yes. Sometimes people do taildraggers. All that is going on here is to find the point where the moment ahead equals the moment behind and that point is the current Cg location.

The first time thru this will take maybe 30 min to hour to get the airplane level and get the measurements. The more accurate the leveling and measurements, the more accuate the location of the Cg is determined. Subsequent setups could be done in as little as 15 to 20 mins. This really isn't very hard. Couple of drafting squares, yardsticks and a surface to draw lines on. Probably harder to get the airplane level more than anything else.

What airplane are you doing?

Just