I too have different sizes and tend to like the 11 or 12 squares..... on taller 5' and 6' I still make them a bit larger for stability, but the 3' and 4' ones can be narrower to crowd in smaller varieties, just don't set them without some type of anchor system. they also make good row cover domes and this year I used some to make an arbor to run gourds onto.
