I don’t think ( most) longarmers are computerized. I know at least a dozen in my area who do not have computer systems and 2 who do- but don’t use them often. Many of us with long arms do free motion, ruler work and some pantos.
I do hand guided work, not using pantos- some ruler work and sometimes I will draw a design on a block or two to get the feel of it. I love meandering along - doodle quilting, stars, flowers, leaves, loops & spirals.
if you are using a frame with machine on a carriage I would start at the top, one side, work across, waves, loops, circles, meander across, advance the quilt and go back the other way.