ORIGINAL: KW_Counter
Ignore Tommygun - he won't be with us long!
I don't know, I've been doing it that way for nearly 20 years, so I guess your definition of "long" is different than mine. If you are unable to hold on to a model airplane, I'd be concerned something else would get you, like a gust of wind.
I guess for extended running such as for engine break in they aren't bad. I adjust the needle with the nose pointing up so it won't lean out in a climb. A tail holder will be of little use in this situation.