If you want to be able to play sitting or standing, practice with a strap, and attach the two ends at brackets that allow the banjo to hang at the right angle for playing and at the right height so that, when sitting, the banjo rests on the lap but the strap takes some of the weight and keeps the instrument at that angle I just mentioned. Then sitting or standing it'll be the same.

I've often noticed rock guitarists who have the instrument really low and parallel to the ground. How they avoid CTS with all those barre chords and difficult wrist positions, I'll never know. The "Buddy Holly" position is the best for avoiding wrist problems, I'd say.

Use the strap to get the angle you want. On banjo, I've noticed that the weight of the neck makes it want to rotate downward, and the strap helps check that inclination (pun alert).

However, I have been known to play without the strap many a time, and to even remove strap if I'm sitting in a chair where I slump. When that happens, the now-loose strap falls down around my back and is in the way, so I must either take it off or find a better chair, and the circumstances often require taking it off.

But I recommend using them at most times.

Bob C.